Module 4: Male Genital: Testicular Cancer Flashcards

1
Q

Now moving on to the final topic of male genital pathologies is testicular cancers. What are risk factors associated with all testicular cancer?

A
Cryptorchidism 
White Male 
Radiation 
Klinefelter syndrome (dysgenesis) 
Isochromosome 12p
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2
Q

In male children what kind of testicular tumors do you see?

A

Benign teratoma + yolk sac tumors of testes

–adult testicular teratomas are malignant; opposite of ovarian teratomas

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3
Q

What are common testicular cancer based on age group?

A

15-30 y.o = mixed germ cell tumors
30-50 y.o = pure seminomas
over 60 = testicular lymphomas

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4
Q

First we are going to discuss seminoma testis for testicular cancers, which again is seen in 30-50 y.o. What are some features?

A

Malignant, solid and unilateral tumors

  • -well circumscribed with no hemorrhage and necrosis (hence painless)
  • -spreads via lymphatics – para aortic and iliac lymph nodes
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5
Q

What is the histology for seminoma testis?

A

Fried Egg Appearance (Sheets of uniform monomorphic cells with delicate septa and lymphocytic infiltrate) with prominent nucleolus and pale cytoplasm

  • -infiltration of non-neoplastic, reactive lymphocytes in the stroma
  • -same histology seen in dysgerminoma and medullary carcinoma of the breast and oligodendroglioma of the brain and hairy cell leukemia
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6
Q

What is the presentation for seminoma testis?

A

Tumor maker: LDH

No increase in serum HCG or AFP

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7
Q

What is treatment for seminoma testis?

A

Excisional biopsy: allows for dx and treatment

radiosensitive: so do radiotherapy
- -excellent prognosis
- –does not cause infertility

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8
Q

Moving on to mixed germ cell tumor, describe the gross image?

A

Hemorrhagic and Necrotic Tumor of the testicle

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9
Q

What is the etiology for mixed germ cell?

A

Again same as all other testicular cancers

  • cryptorchidism: 3-5fold increase
  • -intersex syndrome: androgen insensitivity syndrome and gonadal dysgenesis
  • -family history
  • -isochromosome of short arm of chromosome 12
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10
Q

What is the pathogenesis for mixed germ cell tumor?

A

Germ cell origin: makes up 95% of testicular tumors usually seen in 15-30 y.o males – more aggressive than a seminoma
Mixed: seminiferous (Seminona) and non-seminiferous (Choriocarcinoma, embryonal, teratoma, and yolk sac) cells of origin: all 3 germ layers on histology

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11
Q

Explain what is seen for mixed germ cell with each of the respective non seminiferous parts?

A

Seminoma (fried egg): LDH
Choriocarcinoma: beta HCG (male pregnancy)
Teratoma : greater than one germ layer
Yolk Sac (schiller-duval bodies): AFP and alpha 1 antitrypsin
Embryonal (Small round blue cells in bizarre arrangement)
–90% of patients have elevated hCG and AFP

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12
Q

What are the complications of mixed germ cell tumors?

A

Mets: via lymph (para aortic and iliac nodes) and blood (liver, lung, brain, bone and kidney)
Tx: orchiectomy and chemo + radiotherapy
–good prognosis due to surgery and chemo response

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13
Q

What are the congenital anomalies hypospadias and epispadias ?

A

Malformations of the urethral groove and urethral canal may create openings:

  • -ventral surface of the penis: hypospadias
  • -dorsal surface of the penis: epispadias
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14
Q

What is the congenital anomaly phimosis?

A

Orifice of the prepuce is too small to permit normal retraction
–due to development anomalies or infection and scarring of the preputial ring

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15
Q

What is the congenital anomaly paraphimosis?

A

When a phimotic prepuce is forcibly retracted over the glans penis – marked constriction and swelling
–painful, urethral constrictions, UTI

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16
Q

Moving onto carcinoma of the penis, what is the etiology?

A

HPV 16 and 18 — integrate into host chromosome — E6 and E7 inactivate p53 and Rb

17
Q

What are the risk factors for carcinoma of the penis?

A

Multiple sexual partners
Cigarettes
Smegma (dirty lubricating fluid in uncircumscribed males)
—rare in muslims and jews because circumcised

18
Q

There are three pre-malignant conditions that are pretty important when it comes to Carcinoma of the penis. Each card will go through one. First is Bowden’s, what are some features?

A

Bowen’s:

  • -40-60 y.o
  • -single (solitary) white lesion in the shaft
  • -squamous dysplasia on histology
  • -Leukoplakia (scaly)
  • -10% chance of progression into invasive squamous cell carcinoma
19
Q

2nd premalignant condition is Erythroplasia of Queyrat, what are some features?

A

Erythroplasia Queyrat:

  • -Solitary red shiny patch plaques on the glans and prepuce
  • -progression to invasive squamous carcinoma
  • -most common one
20
Q

3rd premalignant condition of carcinoma of the penis is Bowenoid Papulosis, what are some features?

A

Bowenoid Papulosis:

  • -30-40s
  • -multiple red (papular) lesions on the shaft and glans
  • -does not progress to invasive squamous cell cancer, tends to regress
21
Q

What is the presentation for carcinoma of the penis?

A

Painless ulcer

  • -only becomes painful if secondarily infected with S. aureus — epididymo-orchitis
  • more common on the glans
22
Q

What investigation is used to make a dx?

A

Penile biopsy most accurate

-malignant squamous cells with keratin pearls

23
Q

What is the spread of penile carcinoma?

A

Inguinal first and then femoral lymph nodes

–inguinal its either deep or superficial depending on the site

24
Q

What is the treatment for penile carcinoma?

A

Resection if not too bad

–penectomy if needed