ABSTRACT

Tumors of the prostate 788 Epithelial lesions, benign 788

Adenoid basal cell tumor (adenoid cystic-like tumor) 788 Adenosis/adenomatous hyperplasia 789

Atypical adenosis 789 Basal cell hyperplasia 790

Atypical basal cell hyperplasia 790 Sclerosing basal cell hyperplasia 790

Benign cribriform lesions (clear cell cribriform hyperplasia) 790 Benign prostatic hyperplasia (BPH) 790

Verumontanum mucosal gland hyperplasia 790 ‘Melanosis’ of the prostate 790

Epithelial polyps of the prostatic urethra 791 Prostatic-type epithelial polyps 791 Adenomatoid or nephrogenic-type polyps 791

Post-atrophic hyperplasia 792 Sclerosing adenosis 793

Prostatic carcinomas 793 Ductal adenocarcinoma 798 Mixed ductal-acinar carcinoma 798 Signet ring cell carcinoma 799 Carcinosarcoma/sarcomatoid carcinoma 799 Adenocarcinoma with neuroendocrine cells 799 Neuroendocrine/small undifferentiated cell

carcinoma 799 Squamous cell carcinoma 799 Adenosquamous carcinoma 799 Adenocarcinoma with oncocytic features 799 Lymphoepithelial-like carcinoma 800 Adenoid cystic carcinoma/basal cell carcinoma 800 Prostatic carcinoma with treatment effect

(androgen-deprivation therapy) 800 Prostatic adenocarcinoma resembling benign

hyperplastic glands 800 Transitional cell carcinoma 800

Prostatic intraepithelial neoplasia (PIN) 801 Low-grade PIN 801 High-grade PIN 801

Rare primary tumors 803 Malignant lymphoma 803 Malignant melanoma 803

Sarcomas and related proliferative lesions of the specialized prostatic stroma 803

Prostatic stromal proliferation of uncertain malignant potential 804

Prostatic stromal sarcoma 804 Leiomyosarcoma 804

Malignant phyllodes tumor 804 Other sarcomas 804

Secondary metastasis 804

Tumors of the urethra 804 Benign urethral lesions 804

Collagen polyp of the urinary tract 804 Fibroepithelial polyp 805

Malignant urethral lesions 805 Primary adenocarcinoma 805 Primary malignant melanoma 805 Primary mucosa-associated lymphoid tissue

(MALT) lymphoma 805 Primary neuroendocrine carcinoma 805

Tumors of the testis 805 Germ cell tumors 805

Carcinoma in situ (CIS)/intratubular germ cell neoplasia (ITGN) 807

Polyembryoma 809 Seminoma 809 Spermatocytic seminoma 811 Teratomas 812 Yolk sac tumor (infantile embryonal carcinoma/

endodermal sinus tumor) 814

Rete testis tumors 814 Adenomatous hyperplasia 814 Carcinoma 814

Sertoli cell tumors 815 Hamartomatous nodules and adenoma in testicular

feminization (androgen insensitivity) syndrome 815 Sertoli cell tumor 816 Sertoli cell tumor, large calcifying 816 Sertoli cell tumor, sclerosing 817

Sex cord-stromal tumors 817 Leydig cell tumor 817

Tumors of the paratesticular region 819 Neoplastic and non-neoplastic proliferations of the

testicular collecting system 819 Cysts and epithelial proliferations 819

Epididymal lesions 819 Epididymal cysts 819 Epididymal papillary cystadenoma 819 Epididymal carcinoma 819 Epididymal metastatic tumors 819

Paratesticular lymphoreticular tumors 819 Plasmacytoma 819 Granulocytic sarcoma 819 Malignant lymphoma 819

Paratesticular mesothelial tumors 819 Mesothelial hyperplasia 820 Mesothelial cysts 820 Adenomatoid tumor 820 Benign cystic mesothelioma 820 Mesothelioma 820

Paratesticular ovarian-type epithelial tumors 820 Serous borderline tumor 820 Serous papillary carcinoma 820

Paratesticular soft tissue tumors 820 Paratesticular tumor-like lesions 821

Cribriform ‘hyperplasia’ of epididymis 821 Monstrous epithelial cells in human epididymis

and seminal vesicles 821

Leydig cells outside the testicular parenchyma 821 Malakoplakia 821 Vasitis nodosa 821 Paratesticular benign fibrous proliferations 822 Inflammatory myofibroblastic (pseudotumor) tumor 822 Tumor of the adrenogenital syndrome and

related lesions 822 Sclerosing lipogranuloma 822 Splenic-gonadal fusion 822 Smooth muscle hyperplasia 822 Miscellaneous lesions 823

Tumors and pseudotumors of the seminal vesicles 823 Cystic epithelial-stromal tumor 823 Seminal vesicle involvement by in situ and invasive

transitional cell carcinoma of the bladder 823 Seminal vesicle involvement by prostate cancer 823

Tumors and tumor-like conditions of the male genital tract are frequently encountered in general practice. Tremendous advances have been made in this field during the past ten years or so,

with new tumor classifications having been developed and new immunohistochemical techniques introduced.