Revision Questions Flashcards

1
Q

Meiosis
a. Does not involve replication of DNA
b. Starts at the onset of puberty in the female ovaries
c. Occurs only in the gonads
d. Is responsible for multiplication of granulosa cells in the follicular phase of the ovarian phase
e. Is only completed in spermatozoa following fertilization of an ovum

A

C

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2
Q

Expl meiosis during oogenesis

A
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3
Q

Ovarian cycle
a. Consists of proliferation and secretory phases
b. Is controlled by FSH and LH from posterior pituitary
c. Involves development of only 1 primordial follicle in each cycle
d. Leads to release of secondary oocyte
e. Produces estrogens that exhibit negative feedback on hypothalamus throughout each cycle

A

D. Ovarian phases: follicular, ovulation, luteal; Uterine phases: menses, proliferative, secretory. FSH and LH from ant. Pituitary cause development of multiple follicles, non-dominant follicles regress and undergo atresia. Estrogen exerts negative feedback on hypothalamus at low levels, but has a positive effect when present in high levels

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4
Q

Menopause is
a. Followed by rise in FSH concentration
b. Caused by decline in hypothalamic function
c. Due to the fact that uterus has become less responsive to estrogens in a female after midlife
d. Seen in both males and females
e. Followed by rise in progesterone concentration

A

A. Can think of menopause as a depletion of follicles within the ovary. Once no more follicles are available, estrogen production by granulosa cells cannot take place, resulting in the removal of –ve feedback on the pituitary. FSH production rises as a result.

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5
Q

. In a normal, healthy 25-year old woman
a. Plasma LH is lowest concentration during 2 days prior to ovulation
b. Plasma FSH is lowest concentration during 2 days prior to ovulation
c. Plasma estrogen concentration is at its lowest during 2 days prior to ovulation
d. Ovulation is followed by a decline in plasma estrogen
e. Ovulation is followed by decline in plasma progesterone

A

E. Menstrual cycle is ~28 days long. Corpus luteum degeneration to corpus albicans is followed by menstruation approx. 1-2 days later

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6
Q

All of the following are correct except, progesterone
a. Concentration in luteal phase is greater than in the follicular phase of menstrual cycle
b. Inhibits hypothalamus GnRH secretion
c. Stimulates respiration
d. Increases excitability of uterine tissue to contractile stimuli
e. Is found in adrenal glands

A

D. Recall that in late stages of pregnancy, high levels of estrogen and progesterone inhibit uterine contractility and prevent onset of labour

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7
Q

. Which of the following is not produced by placenta?
a. Oxytocin
b. hCG
c. somatomammotrophin
d. estrogen
e. progesterone

A

A

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8
Q

Wrt male reproductive function, which is incorrect?
a. Hypothalamus regulates spermatogenesis
b. Hypothalamus controls testerone secretion
c. Testosterone has paracrine effects
d. Oestrogens can be found in male
e. Inhibin is secreted by Leydig cells

A

E. Inhibin is produced by Sertoli cells in the male and Granulosa cells in the female

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9
Q

Which would be effective in initiating labour?
a. Administer progesterone to mother
b. Administer oestrogen to mother
c. Administer LH to mother
d. Antagonist of prostaglandin F2a to mother
e. Mechanically dilating and stimulating the cervix

A
  1. E. Massaging and dilating the cervix causes release of oxytocin from post. Pituitary, resulting in labour onset. Prostaglandins stimulate contractions (therefore, D, which mentions antagonists, is the wrong option) while progesterone inhibits them
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10
Q

In order to restore fertility in a hypophysectomized adult male, it is necessary to administer:
A. gonadotrophin-releasing hormone
B. gonadotrophins
C. prolactin
D. inhibin
E. steroid hormones

A
  1. B. Hypophysis (pituitary gland) usually produces FSH and LH to act on testes, replacing them will restore fertility. While administering GnRH can stimulate the pituitary to release LH and FSH, in a hypophysectomized male, the pituitary is not present to respond to GnRH. Therefore, simply administering GnRH would not lead to the release of these hormones.
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11
Q

In a normal adult male, the administration of a specific luteinizing hormone (LH) receptor inhibitor will lead to which one of the following sets of changes in plasma hormone concentration? With regard to Plasma LH, Plasma FSH, Plasma testosterone respectively?
A Increase, No change, Decrease
B No change Increase No change
C Decrease No change Decrease
D Increase Decrease Increase
E Increase Increase Decrease

A

E. LH normally induces release of testosterone from Leydig cells. Blocking the receptor will reduce testosterone levels. This removes the negative inhibition effect it has on FSH and LH, resulting in a rise in both

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12
Q

After a blastocyst implantation has occurred, the first missed menstrual period in a healthy female is the result of:
A. degeneration of the corpus luteum
B. formation of a trophoblast that secretes gonadotrophins
C. formation of a trophoblast that secretes osteogen and progesterone
D. decreased ovarian synthesis of osteogen and progesterone
E. increased placenta secretion of osteogen and progesterone

A

B. After implantation, syncitiotrophoblasts produce hCG, maintaining the corpus luteum to produce estrogen and progesterone, which suppress the ovarian cycle and maintain the endometrium respectively

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13
Q

. Which one of the following statements is FALSE? Testosterone:
A. is produced by foetal testes
B. inhibits luteinizing hormone secretion from the pituitary gland
C. is a prooestrogen
D. is inactivated when converted to dihydrotestosterone (DHT)
E. is produced in the female

A

D. DHT is more active than testosterone

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14
Q

A 32-year old woman is diagnosed with secondary amenorrhea and is suspected of intrauterine adhesions. Which of the following supports this diagnosis?
A. Presence of hot flushes
B. Low follicle-stimulating hormone levels
C. Normal oestrogen levels
D. Monophasic basal body temperature chart
E. Enlargement of her uterus

A
  1. C. Intrauterine adhesions (Asherman’s syndrome) refer to scarring of the endometrium, possibly caused by surgery. Scarring prevents the endometrium from being shed normally. Therefore, even if sex hormones function normally (normal oestrogen levels), menstruation cannot take place.
    * Hot flush indicates a fall in FSH and estrogen, occurs commonly in menopause
    * Monophasic body temperature indicates disruption of cycle, as temperature usually rises during secretory phase
    * Enlargement of uterus potentially indicates pregnancy, which could also cause amenorrhea
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15
Q

Common investigations of a breast lump include all of the following, EXCEPT:
A) Ultrasound examination
B) CT scan
C) Fine needle aspiration biopsy
D) Mammogram
E) Core biopsy

A

B

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16
Q

Lymphatic vessels from the anal canal, below the pectinate line, drain into which lymph nodes?
a. para-aortic
b. superior mesenteric
c. internal iliac
d. superficial inguinal
e. inferior mesenteric

A

D. Above PECTINATE LINE: Lymph drains into the internal iliac lymph nodes
Below PECTINATE LINE: Lymph drains into superficial inguinal lymph nodes

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17
Q

The ischiocavernosus muscle is found in the:
a. true pelvis
b. superficial perineal space
c. deep perineal space
d. ischiorectal fossa
e. around the bulb of the penis

A

B. The superficial perineal space/ pouch is a fully enclosed compartment. Its superior border is the perineal membrane while its inferior border is the fascia of perineum. Yes, it contains the ischiocavernosus muscle!

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18
Q

In the male, during a rectal examination, each of the structures below can be palpated
(felt) EXCEPT for the:
a. prostate
b. sacrum
c. ductus deferens
d. coccyx
e. ischial tuberosity

A

C

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19
Q

What are the walls of the ischorectal fossa?
Lateral wall:
Medial wall:
Inferior wall:
Superiomedial wall:
Superiolateral wall:

A

Lateral wall: Ischium, obturator internus muscle (D), sacrotuberous ligament Medial wall: Levator ani muscle (A)
Inferior wall: Deep perineal pouch
Superiomedial wall: Levator ani muscle (A)
Superiolateral wall: Obturator internus muscle (D)

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20
Q

In the male, the pelvic diaphragm separates the:
a. true pelvis from the false pelvis
b. lesser and greater sciatic notches
c. perineum from the ischiorectal fossa
d. deep perineal pouch from the superficial perineal pouch
e. pelvis from the ischiorectal fossa

A

E

21
Q

EachofthefollowingcrossesthepelvicbrimEXCEPTthe:
a. vas deferens
b. uterine artery
c. ureters
d. middle sacral artery
e. internal iliac artery

A

B.
(A) Refer to Gray’s Anatomy Page 424 (Fig 5.2B, In Men). It is evident that the vas deferens/ ductus deferens crosses the pelvic brim.
(B) The uterine artery arises from the interior division of the internal iliac artery. It supplies the uterus. It does not pass the pelvic brim because it originates and terminates inside the pelvis.
(C) The ureters arise from the kidneys at the posterior abdominal wall (upper parts) and have to travel to the bladder that sits on the pelvic floor. It definitely has to pass through the pelvic brim.
(D): The middle sacral artery/ median sacral artery is a small vessel that arises posterior to abdominal aorta and superior to its bifurcation. It descends in the middle line in front of the 4th and 5th lumbar vertebrae, the sacrum and coccyx, ending in the glomus coccygeum. From the description of its path, it definitely passes through the pelvic brim.
(E): From the diagrams, the internal iliac artery crosses the pelvic brim.

22
Q

A needle in the vagina can be used to determine fluid-dependent spaces within the
peritoneal cavity. Which of the following peritoneal spaces would most likely
accumulate fluid?
a. Vesicouterine pouch
b. Pararectal space
c. Rectouterine pouch (of Douglas)
d. Paravesical space
e. Retropubic space

A

C. As the lowest part of the peritoneal cavity, fluids tend to gravitate and collect in the rectouterine pouch

23
Q

While doing a suprapubic puncture to empty a fully distended urinary bladder, all
the following structures may be encountered EXCEPT
A. Scarpa’s (membranous) fascia.
B. rectus abdominis.
C. transversalis fascia.
D. rectus sheath.
E. peritoneum.

A

E. The peritoneum is located superior to the bladder and would not be encountered during a suprapubic puncture, as the needle is inserted into the bladder below the peritoneal reflection. Entering the peritoneal cavity during this procedure could lead to serious complications such as bowel perforation.

24
Q

The functions of the Sertoli cells of the testis include all the following EXCEPT
A. supporting spermatogenesis.
B. forming the blood-testis barrier.
C. secreting testosterone.
D. facilitating maturation of spermatozoa.
Confidential. Property of NUS 2
E. providing physical support to the seminiferous tubule.

A

C

25
Q

In an ovarian mid-cycle, ovulation is triggered by a surge of
A. progesterone
B. estrogen
C. follicle stimulating hormone (FSH)
D. oxytocin
E. luteinizing hormone (LH)

A

E

26
Q

All the following functions may be affected in a 44-year-old man following an
injury to the pudendal nerve EXCEPT
A. touch sensation from the scrotal skin.
B. sensation of distended urinary bladder.
C. urinary continence.
Confidential. Property of NUS 3
D. bowel continence.
E. pain sensation from the anal canal.

A

B. The pudendal nerve primarily provides sensory and motor innervation to the perineum, external genitalia, and anal region.

27
Q

Mesoderm gives rise to all the following structures in the testis EXCEPT the
A. connective tissue.
B. tunica vaginalis.
C. Sertoli cells.
D. Leydig cells.
E. spermatogonia

A

E. Spermatogonia are the germ cells responsible for sperm production. They originate from primordial germ cells, which arise from the epiblast and migrate into the developing gonads during embryogenesis.

28
Q

During embryonic development of the ovary, follicular cells are derived from the
A. cortical cords.
B. hindgut.
C. paramesonephric ducts.
D. primordial germ cells.
E. yolk sac.

A

A. Cortical cords: The epithelium of the genital ridge proliferates to form cortical cords, which surround the oogonia.

29
Q

Differentiation of the Wolffian duct in the male results in the formation of the
A. testis.
B. penis.
C. scrotum.
D. vas deferens.
E. penile urethra.

A

D

30
Q

At the time of fertilization, the secondary oocyte is arrested at
A. prophase of the last mitosis
B. prophase of meiosis-I
C. metaphase of meiosis-I
D. prophase of meiosis-II
E. metaphase of meiosis-II

A

E

31
Q

During pregnancy, which one of the following hormones controls the conversion
of the epithelial cells to secretory cells for milk production?
A. Progesterone
B. Estrogen
C. Oxytocin
D. Prolactin
E. Human placental lactogen (hPL)

A

A

32
Q

The pudendal nerve supplies the following EXCEPT
A. anal canal.
B. perineal muscles.
C. scrotum.
D. penile (spongy) urethra.
E. detrusor muscle.

A

D

33
Q

Special histological types of breast carcinomas are generally associated with a
better prognosis than ductal and lobular carcinomas. A special type of breast
carcinoma with pleomorphic neoplastic cells, many mitoses and prominent
lymphoid infiltrate is called:
A. Tubular carcinoma
B. Papillary carcinoma
C. Mucinous carcinoma
D. Metaplastic carcinoma
E. Medullary carcinoma

A

E. Pleomorphic nuclei that are high-grade.
A prominent lymphocytic infiltrate surrounding the tumor, which may help contain its spread.

34
Q

Which test should be included as part of routine antenatal follow-up?
A. Hepatitis A antibody
B. Hepatitis C antibody
C. Hepatitis B DNA
D. Toxoplasma antibody
E. HIV antibody

A

E

35
Q

Genital infection with which of the following pathogens is associated with an
increased risk of ectopic pregnancy?
A. Candida albicans
B. Treponema pallidum
C. Gardnerella vaginalis
D. Chlamydia trachomatis
E. Haemophilus ducreyi

A

D

36
Q

A 35-year-old man developed urethral discharge a few days after having sex
with a new partner. His doctor took a urethral smear and found Gram-negative
diplococci. Select the BEST answer?
A. Serology for syphilis is routinely performed in patients with gonorrhoea
B. As the urethral smear was positive, further tests are unnecessary
C. Empirical therapy for gonorrhoea is oral azithromycin
D. Neisseria gonorrhoeae has a polysaccharide capsule
E. Vaccinate contacts of patients with gonorrhoea

A

A. Serology for syphilis is routinely performed in patients with gonorrhoea.
Explanation of Each Option
A. Serology for syphilis is routinely performed in patients with gonorrhoea.
This statement is correct. It is common practice to perform serological testing for syphilis in patients diagnosed with gonorrhea due to the high rate of co-infection with sexually transmitted infections (STIs). This helps in early detection and treatment of syphilis.
B. As the urethral smear was positive, further tests are unnecessary.
This statement is incorrect. While a positive urethral smear for Gram-negative diplococci suggests gonorrhea, further testing (such as for chlamydia and other STIs) is often warranted for comprehensive management.
C. Empirical therapy for gonorrhoea is oral azithromycin.
This statement is misleading. Current guidelines recommend dual therapy for gonorrhea, typically involving an injectable cephalosporin (like ceftriaxone) combined with azithromycin, rather than azithromycin alone due to concerns about resistance.
D. Neisseria gonorrhoeae has a polysaccharide capsule.
This statement is incorrect. Neisseria gonorrhoeae does not have a polysaccharide capsule; it has a complex outer membrane structure but lacks a classic capsule like some other bacteria.
E. Vaccinate contacts of patients with gonorrhoea.
This statement is incorrect. There is currently no vaccine available for gonorrhea, and vaccination of contacts is not part of standard practice.

37
Q

A neonate aged two weeks was admitted with meningitis. Select the BEST
answer?
A. The absence of a rash excludes Neisseria meningitidis
B. A cephalosporin such as ceftriaxone is sufficient monotherapy
C. Late-onset disease is associated with Escherichia coli
D. Bordetella pertussis causes meningitis in this age group
E. The CSF-to-blood glucose ratio is reduced in bacterial meningitis

A

E. In cases of bacterial meningitis, the glucose levels in cerebrospinal fluid (CSF) are typically lower than those in the blood due to the consumption of glucose by bacteria and inflammatory cells. A reduced CSF-to-blood glucose ratio is a classic finding in bacterial meningitis and is critical for diagnosis.

38
Q

A 24-year-old woman was in a car that was involved in a road traffic accident.
She was seen by her family physician, and was prescribed some oral
analgesics. A month later, she noticed a painless swelling in her breast. The
biopsy revealed fat surrounded by epithelioid histiocytes, multinucleated giant
cells and chronic inflammation. What is the LIKELY diagnosis?
A. Fat necrosis
B. Tuberculous mastitis
C. Foreign body implantation
D. Sarcoidosis
Fungal mastitis

A

A. Fat necrosis
Explanation
Clinical Context:
The patient experienced trauma from a car accident, which is a common precipitating factor for fat necrosis in the breast.
Histopathological Findings:
The biopsy revealed fat surrounded by epithelioid histiocytes, multinucleated giant cells, and chronic inflammation. These findings are characteristic of fat necrosis, which occurs when fat tissue is damaged (often due to trauma or surgery), leading to necrosis of adipocytes and subsequent inflammatory response.
Differential Diagnosis:
Fat Necrosis: Typically presents with a history of trauma and shows necrotic fat with inflammatory cells, including giant cells.
Tuberculous Mastitis: Would show caseating granulomas and is less likely in this context without other systemic symptoms.
Foreign Body Implantation: Would typically show foreign body giant cells but would not be associated with the history of trauma unless there was an implant.
Sarcoidosis: Would present with non-caseating granulomas and systemic symptoms, which are not indicated here.
Fungal Mastitis: Uncommon and would usually present with a different set of clinical features.

39
Q

Which types of human papillomavirus is associated with condyloma
accuminatum of the penis?
i. Type 6
ii. Type 11
iii. Type 16
iv. Type 18
A. i and ii
B. ii and iii
C. iii and iv
D. ii and iv
E. i and iii

A

A

40
Q

Phyllodes tumour (PT) of the breast is a stromal neoplasm. Which of the
following statements regarding the characteristics of PT is CORRECT?
A. Typically displays low mitotic rate (<1 per high-power field)
B. Arises from extra-lobular stroma
C. Displays very low cellularity
D. Lymphatic spread is common
E. Most are low-grade tumours

A

E.

41
Q

A 25-year-old woman presented with a 1-cm lump in her left breast. The lump
was firm and mobile. Biopsy of the lump showed proliferation of benign glands
and stromal components. What is the MOST likely diagnosis?
A. Fibroadenoma
B. Invasive ductal carcinoma
C. Ductal carcinoma in situ
D. Fibrocystic change
E. Fat necrosis

A

A. Fibroadenoma
Explanation
Clinical Presentation:
The lump is described as firm and mobile, which is characteristic of fibroadenomas. They are common benign breast tumors that typically present in younger women, particularly in their late teens to early 30s.
Biopsy Findings:
The biopsy showed proliferation of benign glands and stromal components, which is typical for fibroadenomas. These tumors consist of both glandular (epithelial) and stromal (connective tissue) components, leading to their characteristic appearance.
Differential Diagnosis:
Invasive Ductal Carcinoma (B): This would typically show malignant features on biopsy, such as atypical cells and invasion into surrounding tissues.
Ductal Carcinoma In Situ (C): This condition would show abnormal cells confined to the ducts without invasion, but it does not present as a palpable mass in the same way as a fibroadenoma.
Fibrocystic Change (D): This condition usually involves cysts and fibrous tissue changes, often associated with pain or tenderness, and does not typically present as a discrete firm lump.
Fat Necrosis (E): This usually occurs after trauma or surgery and presents as a firm, round mass but is associated with a history of injury to the breast tissue.

42
Q

Concerning the diagnosis of genital herpes simplex virus (HSV) infection,
which of the following statement is FALSE?
Confidential. Property of NUS 15
A. Assays demonstrating the presence of HSV DNA in a vesicle swab are the
most sensitive
B. The clinical features of recurrent genital herpes are so distinctive that
laboratory confirmation is not required
C. The presence of antibodies specific for HSV-2 in a blood sample is not
diagnostic
D. The diagnosis can be aided by immunofluorescent antigen detection using
cells scraped from the base of a genital ulcer
E. The virus can be isolated in cell culture from a sample of vesicle fluid

A

B

To determine which statement regarding the diagnosis of genital herpes simplex virus (HSV) infection is FALSE, let’s evaluate each option:
A. Assays demonstrating the presence of HSV DNA in a vesicle swab are the most sensitive
True: Nucleic acid amplification tests (NAATs), such as PCR, are highly sensitive and specific for detecting HSV DNA from vesicle swabs. This method is considered the gold standard for diagnosing active HSV infections.
B. The clinical features of recurrent genital herpes are so distinctive that laboratory confirmation is not required
False: While recurrent genital herpes can have characteristic clinical features, laboratory confirmation is often recommended to ensure accurate diagnosis, especially in atypical cases or to differentiate from other conditions.
C. The presence of antibodies specific for HSV-2 in a blood sample is not diagnostic
True: The presence of antibodies indicates exposure to the virus but does not confirm an active infection. Serological tests can show past infections but cannot determine whether a current outbreak is occurring.
D. The diagnosis can be aided by immunofluorescent antigen detection using cells scraped from the base of a genital ulcer
True: Immunofluorescent assays can be used to detect HSV antigens from samples taken from lesions, aiding in diagnosis.
E. The virus can be isolated in cell culture from a sample of vesicle fluid
True: HSV can be cultured from vesicular fluid, although this method is less sensitive than NAATs and may yield false negatives if the lesion is healing or if the sample is not collected properly.

43
Q

A 27-year-old woman, who was 12-weeks pregnant, presented with a diffuse
morbilliform rash and small joint polyarthropathy. The following are her
serology results:
* anti-rubella IgG positive, anti-rubella IgM negative
* anti-parvovirus IgG positive, anti-parvovirus IgM positive
Which of the following is the MOST likely outcome of her pregnancy?
A. A normal healthy baby
B. A baby with multiple congenital abnormalities
C. A baby with congenital deafness
D. A baby with congenital microcephaly
E. A baby with congenital bilateral cataracts

A

A
In the case of the 27-year-old woman who is 12 weeks pregnant and has serology results indicating positive anti-parvovirus IgG and IgM, along with positive anti-rubella IgG and negative IgM, we need to analyze the implications of these findings for her pregnancy outcome.
Serology Interpretation
Anti-Rubella IgG Positive, Anti-Rubella IgM Negative:
This indicates that she has immunity to rubella, likely from a past infection or vaccination. There is no active rubella infection at this time, which means there is no risk of congenital rubella syndrome.
Anti-Parvovirus IgG Positive, Anti-Parvovirus IgM Positive:
The presence of both IgG and IgM antibodies to parvovirus B19 suggests a recent or current infection. Parvovirus B19 can cause complications in pregnancy, particularly during the first and second trimesters.
Potential Outcomes
Congenital Anomalies from Parvovirus B19: Infection with parvovirus B19 during pregnancy can lead to fetal complications such as:
Hydrops fetalis: A serious condition where excess fluid accumulates in the fetus.
Anemia: Due to the virus’s effect on red blood cell production.
Congenital Abnormalities: While parvovirus B19 is primarily associated with anemia and hydrops fetalis, it does not have a well-established link to specific congenital abnormalities like those seen with other infections (e.g., rubella).
Analysis of Options
A. A normal healthy baby:
Unlikely due to the recent parvovirus infection.
B. A baby with multiple congenital abnormalities:
Not typically associated with parvovirus B19.
C. A baby with congenital deafness:
Congenital deafness is more commonly associated with rubella, not parvovirus B19.
D. A baby with congenital microcephaly:
Microcephaly is also associated with infections like Zika or rubella but not specifically with parvovirus B19.
E. A baby with congenital bilateral cataracts:
Congenital cataracts are primarily linked to maternal infections like rubella but not parvovirus B19.
Conclusion
Given the serology results indicating a recent parvovirus infection and the absence of active rubella infection, the most likely outcome of her pregnancy would be complications related to parvovirus B19 rather than specific congenital abnormalities typically associated with other infections.
Therefore, while none of the options perfectly fit the scenario, the best interpretation based on the information given would be:
A. A normal healthy baby

44
Q

Pregnant lady presents with ?faintness and a thready pulse. She was detected to have a normally implanted placenta with a retroplacental hematoma. Which best describes the patient’s condition?
A. Placenta accreta
B. Placentaincreta
C. Placentapercreta
D. Placentaabruptio
E. Placenta praevia

A

D. This conclusion is based on the presentation of faintness and a thready pulse, which are indicative of potential hemorrhagic shock, often associated with placental abruption. The presence of a retroplacental hematoma further supports this diagnosis, as it is a common finding in cases of abruptio placentae. In contrast, conditions like placenta accreta, increta, and percreta involve abnormal implantation of the placenta but do not typically present with acute symptoms like faintness and a thready pulse due to hemorrhage

45
Q

Lady with lump in outer upper breast. Imaging-guided biopsy was done. Histology shows fibrocystic change with apocrine metaplasia and epithelial hyperplasia and some calcifications. Which of the following courses of action would be most appropriate? (This was a pyp question)
A. Do a breast MRI to further investigate
B. RepeattheBiopsy
C. Reassurancecanbegivenasthisisabenignfinding
D. Mastectomyasthisisamalignantfinding
E. Do an excisional biopsy so that you can examine more tissue

A

C

46
Q

28yo guy presents with enlargement of testicle. Markedly raised AFP and hCG. Cut surface is variegated in colour. Which is the most likely cause of the enlargement?
A. Seminoma
B. Mixedgermcelltumour
C. Filariasis
D. Lymphoma E. Tuberculosis

A

B. Elevated Tumor Markers:
AFP is typically elevated in non-seminomatous germ cell tumors, particularly in yolk sac tumors and embryonal carcinoma.
hCG can be elevated in both seminomas and non-seminomatous germ cell tumors, especially those with choriocarcinoma components.
Variegated Cut Surface:
The description of a “variegated” cut surface is indicative of mixed germ cell tumors, which often contain different types of germ cell components (e.g., seminoma, embryonal carcinoma, teratoma).

47
Q

40 year old woman with microcalcifications detected on mammography. Advised to undergo wide excision of the affected area, but no adjuvant radiotherapy or chemotherapy was required.
A. Usual type ductal hyperplasia
B. Fibroadenoma
C. Ductal carcinoma in situ
D. Phyllodes tumour
E. Mucinous carcinoma

A

C. This is a slightly tricky question if you are not familiar with the microscopic appearance of DCIS, but the question drops a few hints. Firstly, “microcalcifications” is a nod towards the typical radiological findings of high-grade DCIS, although we should be wary that microcalcifications are often a benign finding and do not mean there is cancer. Secondly, wide excision was required but no adjuvant radiotherapy or chemotherapy was needed. The wide excision rules out the possibility of A and B, and the lack of any precautionary radio/chemotherapy suggests that E is unlikely (since it is cancer).

Microcalcifications are more associated with DCIS than phyllodes tumour, and were specifically mentioned by Prof Putti in his breast patho lecture, so it is most likely to be the answer.

48
Q

Which of the following molecular categories is the most common in invasive breast carcinoma?

A) ER+, HER2 equivocal
B) ER+, HER2+
C) ER-, HER2-
D) ER+, HER2-
E) ER-, HER2+

A

D. Based on the molecular subtypes of invasive breast cancer, the ‘Luminal A’ subtype is the most common (~ 50%) and corresponds to ER/PR positive and HER2 negative.