RD 2014 August recalls- WA: formatted Flashcards
Young man, neuro symptoms in legs, MRI spine shows lesion which is isointense to csf on t1 and t2, vertebral segmentation anomaly
A) neurenteric cyst
B) Arachnoid cyst
neurenteric cyst
20 week anatomy scan, abdominal wall mass, cord inserting at the apex
A) omphalocele
B) Gastroschisis
C) Pseudo-omphalocele
omphalocele
24 week scan, echogenic bowel A) not associated with Trisomy 21 B) Associated with trisomy 18 C) Associated with cystic fibrosis D) Not infection
Associated with cystic fibrosis
WJI: Associations include T21,T13, T18, Turners, CMV, ingestion of blood, meconium peritonitis, CF, IUGR and foetal demise
Patient in MVA, initial CT normal, has dysarthria, right limb symptoms, MRI shows left cerebral ischaemia, Associated findings:
- Subdural haematoma
- Extradural haematoma
- Skull fracture
- Mural irregularity of left CCA
d. Mural irregularity of left CCA
70 yr old, lower limb symptoms worsening over 1 week, cord signal change from c7 to t6, cord expansion, minimal enhancement:
- Transverse myelitis
- Metastasis
- Astrocytoma
- Ependymoma
a. Transverse myelitis because of onset, length and minimal enhancement.
Lucent lesion surrounding the root of a tooth, ill defined margin, not associated with unerupted tooth or tooth like:
- Ameloblastoma
- Metastasis
- Dentigerous cyst
- Odontoma
- LW:
- Ameloblastoma: unlikely, i would expect descriptors of multi cystic, solid components, expansion mandible, extensive root absorption etc
- Metastasis: possible
- Dentigerous cyst: FALSE - associated with un erupted crown of tooth
- Odontoma: Unlikely: usually radiodense, adjacent to but not surrounding tooth root, although do start off lucent.
so…..options are: mets, or correct answer not recalled.
Kind of sounds like a peri apical cyst / radicular cyst: located apex of non vital tooth, round, with well corticated border (this factor doesnt fit with stem sadly), usually <2cm…
*AJL - agrees with above. Of the options available I would favour mets.
Previous answer:
a. Ameloblastoma
Features to suggest pilocytic astrocytoma:
- Hyperdense, solid mass with enhancement in left cerebellum
- Hyperdense, solid mass in vermis
- Hypodense, enhancing nodule, left cerebellum
c. Hypodense, enhancing nodule, left cerebellum
5 yr old, physiological uptake on PET:
- Thymus
- Pancreas
- Bone marrow
- Adrenals
a. Thymus
c. Bone marrow to lesser extent (see aug 2014 WA)
Succenturiate lobe, consultant asks which is the commonest association with vasa previa:
- Succenturiate
- Velamentous insertion
- Circumvellate
b. Velamentous insertion
Placenta rolled edges, basal plate larger than the chorionic plate:
- Circumvellate
- Succenturiate
- Placenta previa
a. Circumvellate
20 weeks scan, placenta covering os, when you go and check its normal:
- Large bladder
- Placenta previa
- Braxton hicks contractions
- Vasa previa
a. Large bladder
c. Braxton hicks contractions can as well
Questions on technetium
Mass number
Number of protons or neutrons or something
- Mass number 99
13. Number of protons or neutrons or something 43 (atomic/proton number), 56 neutrons
- Difference between i123 and I 131
**SCS: radiopaedia article I-131:
I-131 - cheaper- poorer resolution (higher energy gamma 364keV), - increased dose - longer half-life -8 days.
used for ablation post total thyroidectomy to mop up/look for remnant thyroid tissue/occult mets.
**SCS: Radiopaedia article trivia I-123:
I-123: Used in DAT scans for parkinsons, (look for comma cs fullstop sign)
AKA: Ioflupane
High affinity for presynaptic dopamine transporters.
Cyclotron product.
Decay by electron capture to Tellurium-123
T1/2= 13.22 Hours
Gamma energy predominantly 159keV
60 yr old, knee pain worsening over 2 years, medial joint involvement, osteophytes:
- OA
- Septic
- Rheumatoid
- Psoriasis
a. OA
40 yr old, acute knee pain, knee swelling, effusion on X-ray:
- Septic
- OA
- Psoriasis
- Rheumatoid
-Septic
Incidental echogenic renal lesion on ultrasound, T1 bright and T2 low:
- Proteinaceous cyst
- Haemorrhagic cyst
- RCC
-Haemorrhagic cyst
- Proteinaceous cyst - T1, T2 high
- Haemorrhagic cyst - T1 high, T2 low or high
- RCC - T1 low, T2 variable (clear vs papillary)
25 yr old, infertility, previous ectopic surgery, left ovary not seen. Right ovarian cystic lesion:
- Dermoid
- Cystadenoma
- Tuboovarian abscess
- Simple cyst
c. Tuboovarian abscess
???? how is this the answer?
WJI: I think it is suggesting prior PID as cause for infertility. Other options not really associated with infertility.
Haemorrhagic ovarian cyst, can’t remember size, management:
- Follow up in 4 weeks during same time of menstruation
- Follow up 6-12 weeks during different cycle of menstruation
- 12 month follow up
- Referal to gynae
b. Follow up 6-12 weeks during different cycle of menstruationif >5cm an pre-menopausal or if perimenopausal. Any size post menopausal needs MRI +/- surgery.
Chin lump, CT shows attenuation of 20 units and -50 nodules:
- Dermoid
- Laryngocele
- Thyroglossal cyst
- 4th Branchial cleft cyst
-Dermoid
Previous left lower chest trauma, CT shows nodules pleural and fissural nodules: what is it???
Splenosis
40 yr old, hyper vascular lesion on CT, MRI with gad shows isointense T2, high arterial, low portal venous, low on delayed images:
- HCC
- Adenoma
- FNH
- Fibrolamellar
-HCC washout
*LW: unsure of this, HCC is usually T2 hyperintense, however other factors are suggestive.
-Adenoma technically remains a possibility.
Hopefully more discriminating features in acutal question, e.g. primovist used, scar, etc…..
*AJL - Also unsure. HCC should be T2 high. Adenoma should be portal venous iso. Neither quite fits.
*IVM: could also be FLHCC (clasically heterogeneous enhancement).
Adenoma often cannot/should not be (depending on what you read) dx on enhancement pattern alone and need sequence to confirm intracellular fat.
Worsening proptosis, thickening of medial Rectus with adjacent fat stranding:
- Thyroid eye disease
- Peri orbital cellulitis
- Pseudo tumor
- Lymphoproliferative disorder
orbital pseudotumour. Unilateral single muscle inflammation with tendon involvement is most common.- medial > superior > lateral > inferiorvs thyroid eye disease- im slow
Painful eye, CT shows low attenuation of the lacrimal gland, peripheral enhancement
-Dacrocystitis?
Dacrocystitis
**LJS - Lacrimal gland involvement dacroadenitis, dacrocystitis is nasolacrimal duct
Abdominal pain, CT shows small bowel mass plus mesenteric mass with calcification, surrounding extension
:-Carcinoid
-Small bowel cancer
-Small bowel lymphoma
-Carcinoid
Colpocephaly association, most likely:
- Agenesis of corpus callosum
- Dandy walker
- Arnold chiari 1
- Arnold chiari 2
Agenesis of corpus callosum
Ultrasound features suggesting benign breast lesion:
- Hypoechoic lesion with internal vascularity
- Hypoechoic lesion with ill defined margins
- Hypoechoic lesion, microlobulation
- Hyper echoic lesion, more echogenic than fat
d. Hyper echoic lesion, more echogenic than fat - i.e calcilum (fat necrosis or oil cyst)
Radial scar on biopsy, further management:
- Follow up mammogram 6 months
- Hook wire, open biopsy
- Hook wire, WLE, sentinel node biopsy
- Mastectomy
-Hook wire, open biopsy
Previous left breast cancer, operated. New palpable lump in right breast, best management:
- Ultrasound of any palpable abnormality
- Follow up mammogram in 6 months
- Follow up mammogram in 1 year-MRI
a. Ultrasound of any palpable abnormality I would get a mammo and USS now.
Bloody nipple discharge, common cause
**LJS - intraductal papilloma common cause of bloody discharge. Papilloma twists on stalk = infarction and bleeding. Doesn’t indicate malignancy. Benign but increased risk of breast ca (often contains ductal hyperplasia - proliferative disease without atypia)
Previous
Bloody discharge indicates malignancy Benign Papilloma is the common cause
Facial fracture, pyramidal shape, base is the teeth, frontonasal junction, pterygoid plate, lateral wall of orbit, anterior and posterior walls of maxilla:
- Le fort 1
- Le fort 2
- Le Fort 3
- Nasoethmoid
- Tripod
-Le fort 2
**LJS - ?poor recall
Pterygoids involved = Le Forte. Frontonasal suture involvement = must be 2 or 3. Lateral wall of orbit would make it Le Forte 3, however base of teeth and ant/post maxillary sinus walls would be 2. Probably 2 with poor recall of lateral orbital rim (inferior orbital rim would be part of 2)
*AJL agree
Renal impairment, angiogram shows bilateral renal artery stenosis, carotid vascular abnormality, segmental narrowing of intracranial vessels:
- Fibromuscular dysplasia
- Atherosclerosis
-Fibromuscular dysplasia
Kicked in balls, ultrasound of testis shows abnormal looking testis, abnormal reflectivity, intact tunica albuginea:
- Haematoma
- Rupture
- Fracture
- Torsion
-Haematoma