Testicular Tumors

Question 1

composed of cytotrophoblasts and synctiotrophoblasts

Answer 1

choriocarcinoma

Question 2

may present initially with gynecomastia

Answer 2

leydig cell tumor, rarely sertoli cell tumor

Question 3

elevated AFP

Answer 3

yolk sac tumor (endodermal sinus tumor), could also be embryonal carcinoma

Question 4

elevated beta hCG

Answer 4

choriocarcinoma, maybe embryonal carc

Question 5

most common testicular tumor

Answer 5

seminoma

Question 6

most common testicular tumor in infants and children up to 3 yrs of age

Answer 6

yolk-sac

Question 7

most common testicular tumor in men over age 60

Answer 7

testicular lymphoma

Question 8

histologic appearance similar to koilocytes (cytoplasmic clearing)

Answer 8

seminoma

Question 9

histologically may have alveolar or tubular appearance sometimes with papillary convolutions

Answer 9

embryonal carc

Question 10

composed of multiple tissue types

Answer 10

teratoma

Question 11

histologic endodermal sinus structures (Schiller-Duval bodies)

Answer 11

yolk-sac tumor

Question 12

25% have cytoplasmic rod-shaped crystalloids of Reinke

Answer 12

leydig cell tumor

Question 13

androgen producing and associated with precocious puberty

Answer 13

leydig cell tumor, possibly sertoli cell tumor

Question 14

A 55 yr old man undergoing treatment for BPH has increased increased testosterone and decreased DHT as well as gynecomastia and edema. What is his medicaiton?

Answer 14

finasteride