Paratesticular lipoma

Definition Benign tumor comprising mature adipocytes of the paratesticular region Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Papillary cystadenoma of the epididymis

Definition A benign papillary epithelial tumor of the epididymis Clinical features Epidemiology Rare, but accounts for one-third of primary epididymal tumors Unilateral cases more common, usually not associated with von Hippel-Lindau disease Bilateral cases typically associated with and seen in 40% of patients with von Hippel-Lindau disease Mean age, 35 years (range, 16–76 years) You’re Reading a Preview Become a Clinical Tree membership for Full access…

Paratesticular idiopathic smooth muscle hyperplasia

Definition Haphazard nonneoplastic overgrowth of the native smooth muscle between or around the vessels or efferent ducts in the paratesticular region or the spermatic cord Clinical features Epidemiology Mean age, 63 years (range, 46–81 years) Etiology not clear; may represent hamartomatous proliferation Epididymal or vas deferens ductal ectasia in some cases suggestive of an obstruction as a cause You’re Reading a Preview Become a Clinical Tree…

Fibrous pseudotumor

Definition Nonneoplastic proliferation of fibrous tissue admixed with inflammatory cells frequently involving the tunica vaginalis Clinical features Epidemiology Most common in the third through sixth decades of life Associated with a hydrocele in 50% of cases Prior trauma or inflammation reported in 30% of cases You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are…

Adenomatoid tumor

Definition A benign tumor of mesothelial origin in the testicular adnexa Clinical features Epidemiology The most common tumor in the testicular adnexa, including the epididymis, tunica albuginea, and spermatic cord Accounts for 32% of all tumors and 60% of all benign tumors at this site Occurs in the late teens up to 79 years of age, with a mean age of 36 years You’re Reading a…

Sperm granuloma

Definition Granulomatous inflammation surrounding extravasated spermatozoa resulting from injury or inflammation of the vas deferens or epididymis Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Vasitis nodosa

Definition Benign ductular proliferation in reaction to obstruction of the vas deferens Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Spermatocele

Definition Cystic dilatation of an efferent ductule, proximal rete testis, or head of the epididymis Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Hydrocele

Definition Accumulation of serous fluid between the parietal and visceral layers of the tunica vaginalis surrounding the testicle or along the spermatic cord Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Glandular inclusions in inguinal herniorrhaphy specimens

Definition Glandular and ductal structures found in inguinal hernia sac specimens, as the remnants of the Wolffian and Müllerian ducts and infolding of coelomic epithelium Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Appendix epididymis

Definition A remnant of the most cranial portion of the mesonephric duct (Wolffian duct) attached to the head of the epididymis Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Appendix testis

Definition A vestigial remnant of the Müllerian duct present on the upper pole of the testis and attached to the tunica vaginalis; also called hydatid of Morgagni Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Tumors of the rete testis

Definition Benign or malignant tumors of rete epithelial origin Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Ovarian epithelial-type testicular tumors

Definition Tumors of the testis and paratestis resembling ovarian-type epithelial tumors Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Testicular lymphoma

Definition Malignant neoplasm of lymphocytes arising from or involving the testis Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Gonadoblastoma

Definition A tumor composed of a mixture of seminoma-like large germ cells and small cells with sex cord features Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Myoid gonadal stromal tumor

Definition A testicular stromal tumor showing features of intertubular primitive mesenchymal cells and peritubular myoid cells Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Stromal tumor of the testis, mixed and unclassified type

Definition Tumors not showing specific histologic differentiation, such as Leydig cells granulosa cells Sertoli cell, or fibroma-thecoma, are considered unclassified type, while those containing two or more sex cord stromal elements are considered mixed type . Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Fibrothecoma

Definition Testicular stromal tumor resembling its ovarian counterpart of fibrothecoma Clinical features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here