Epididymal Tumors: 1. Report of 15 New Cases Including Review of Literature. 2. Histochemical Study of the So-Called Adenomatoid Tumor

Epididymal germinoma: Reality or myth?

“…4,5 Although extra-testicular seminomas have been noted, no case of primary epididymal seminoma has been reported. 6 Epididymal tumours can be misdiagnosed as epididymal tuberculosis, chronic epididymitis and spermatocele.…”

Malignant Fibrous Histiocytoma of the Epididymis

“…Differential diagnosis should include benign and malignant tumors and chronic inflammatory conditions of the epididymis (table 1). Since 25% of the tumors may be expected to be malignant, the specimen should always be examined by a pathologist [1,2,7,10].…”

“…Epididymal tumors are rare; 75% of these growths are benign. Most (73%) are adenomatoid tumors, which leiomyomas accounting for 11% and papillary cystadenomas for 9% (table 1) [1,2]. Among the malignant lesions (25%), the most frequent tumors are sarcomas (44%), metastases of other malignant tumors (27%), and primary epididymal cancers (24%) (table 2) [1].…”

Differential Diagnosis and Therapy of Rare Testicular Tumors

“…Synonyms for adenomatoid tumors are adenomyoma, adenofibroma, angioma, angiosarcoma, lymphadenoma, leiomyoma, and low-grade adenocarcinoma [17], More than 355 cases have been described up to 1977 [19], The origin of adenomatoid tumors from either the endothe lium, the mesonephros, or Miiller's duct is a matter of discussion [18,[20][21][22][23], Several similar histochemical and ultrastructural features between adenomatoid tumors and epididymal duct cells were found. Based on these find ings, it is suggested that the adenomatoid tumor is de rived from the coelomic epithelium after it has begun to differentiate in the direction of genital epithelia [24].…”

“…These spaces are lined by flattened, cuboidal, or epithelial-like cells, many of which show vacuolization [25,26]. Adenomatoid tu mors are benign lesions [18].…”