1. Acute bacterial epididymo-orchitis; from sexual transmission or gram -ve bacteria. Infection spreads from urethra/LUT > enlarge tender tests
2. Viral orchitis; unilateral infection from mumps during puberty
3. Tuberculous epididymo-orchitis; Bloodstream spread to epididymis from active TB > caseous granulomas in testes
1. Hydrocoele; increased serous fluid in tunica vaginalis (becomes distended) > testes atrophy
2. Haematocoele; blood within tunica vaginalis > testes atrophy
3. Spermatocoele; semen accumulation within spermatic cord (due to epididymal cysts/dilation)
4. Chylocoele; lymph in the tunica albuginea (due to lymphatic obstruction) > increase scrotum size but testes atrophy
5. Varicocoele; Varicose pampiniform venous plexus in spermatic cord (presents as "Bag of Worms" = sluggishness of veins) > increased intrascrotal pressure
6. Inguinal Hernia; herniation where loop of intestine enters inguinal canal (due to intra-abdominal pressure, heavy weights etc)
1. Seminoma (classic); carcinoma of the seminefereous epithelium (potatoe tumours) > appear with clear cytoplasm & large nucleus
2. Spermatocytic seminoma (best prognosis); benign classic seminoma (>60 y/o males) > clear cytoplasm/large nucleus & clear pattern
3. Teratoma; mature - occur in young, behavour in benign manner, good prognosis. Immature - highly malignant, little differentiation, poor prognosis
4. Yolk sac tumour (most common); good prognosis = chemosensitive, diagnosed when a-fetoprotein (only present in pregnancy)
5. Choriocarcinoma; trophoblastic tissue, highly malignant (rare), diagnosed by HcG levels (present in pregnancy), poor prognosis
6. Embyronal carcinoma; pleomorphic cells, highly malignant, responds well to cytotoxic chemotherapy, good prognosis (w/ early detection)
1. Interstitial cell tumour; involves Leydig cells, premature puberty onset, associated w/ increased testosterone levels
2. Sertoli cell tumour; well circumscribed, benign, sertoli cell = nourish spermazoa