male pathology

Question 1

the middle picture shows an early change of devlopment and the bottom picture shows the typical appearance of the mass once it has invaded deeper

what is the diagnosis from the lower pictures

Answer 1

squamous cell carcinoma

keratin pearls (layers of differentiating squamous cells with keratin centre) present

Question 2

What are the differentials for a penile squamous cell carcinoma?

Answer 2

papillomavirus

equine sarcoids (bovine papillomavirus)

EHV

Question 3

Match the numbers to the letters and name the tumours

Answer 3

sertoli cell tumour 3 +c

leydig / interstitial cell tumour - 1+b

seminoma -2+a

Question 4

what testicular tumour is likely to produce feminisation in dogs and what are the signs?

Answer 4

setoli cell tumour (make oestrogens)

mammary development, change in hair patterns, weight redistribution, attractive to other dogs, pendulous sheath, testis atrophy, behaviour changes

can also cause prostatic hypertrophy, anaemia

Question 5

What is the lesion?

Answer 5

epididymitis

Question 6

what is epidiymities sometimes described as a granulomatous?

Answer 6

walls of sperm as a FB as haploid

inflamation of epididymis breaks down the basement membrane

Question 7

What is the common method of epididymitis infection?

Answer 7

ascenting infection from accessory glands / uti

Question 8

Both photographs are of enlarged prostates. what process is likely going on in A and B?

Answer 8

A - benign hyperplasia (uniform smooth surface, cells looks normal just too many of them)

B - malignant hypertrophy (differences on surface, high mitotic index, no cytoplasm, cells and nuclei of different sizes)

Question 9

With what canine diseease can you get squamous metaplasia of the protate?

Answer 9

sertoli cell tumour

Question 10

What is this?

Answer 10

equine testicular teratoma