Items tagged “testes”

12 results found

Non-seminomatous germ cell tumors

Non-seminomatous germ cell tumors (NSGCTs) are one of the main groups of germ cell tumors (the other being seminoma). Although they are made up of distinct histological entities, in general, they have similar radiographic appearances. They can, however, be found widely in the body, with variable...


Varicocele is the dilatation of the pampiniform plexus of veins, a network of many small veins found in the male spermatic cord. It is the most frequently encountered mass of the spermatic cord. Epidemiology The estimated incidence is at ~15% of the general male population and ~40% of subferti...

Testicular microlithiasis

Testicular microlithiasis is a relatively uncommon condition that represents the deposition of multiple tiny calcifications throughout both testes.  The most common criterion for diagnosis is that of five microcalcifications in one testicle, although definitions have varied in the past. In the ...

Testicular seminoma

Testicular seminomas are the most common testicular tumors and account for ~45% of all primary testicular tumors. This article concerns itself only with testicular seminomas, however, seminomas can arise outside of the testicle most often within the anterior mediastinum, e.g. anterior mediastina...

Testicular teratoma

Testicular teratoma, unlike ovarian teratoma, is often aggressive in its biological behavior, and often exists as part of testicular mixed germ cell tumors.   Epidemiology Pure testicular teratomas account for only 4-9% of all testicular tumors. A similar number are seen in the context of test...

Testicular mixed germ cell tumors

Testicular mixed germ cell tumors are, as the name suggests, testicular tumors composed of two or more types of germ cell tumor. They are considered to be part of non-seminomatous germ cell tumors, as it is that component which dictates prognosis and treatment.  Overall they account for over 10...

Testicular adrenal rests

Testicular adrenal rests are a rare cause of a testicular mass. Terminology Testicular adrenal rests can be known by a variety of terms 2: testicular adrenal rest tumor (TART) testicular adrenal rest tissue testicular tumor of the adrenogenital syndrome testicular adrenal-like tissue Epid...

Adenomatoid tumors of the scrotum

Adenomatoid tumors of the scrotum are benign, solid extratesticular lesions that can originate from the epididymis, tunica vaginalis, or spermatic cord (90% derived from the funiculus). Epidemiology They are the most common extratesticular neoplasm, and most common tumor of the epididymis, and...


Epididymitis refers to inflammation of the epididymis and may be associated with inflammation extending to the testis itself, in which case the term epididymo-orchitis is used. This should be distinguished from isolated orchitis, which is by comparison much less common.  Epidemiology There are...

Testicular germ cell tumors

Testicular germ cell tumors account for 90% of primary tumors of the testes. They are the most common nonhaematologic malignancy in men 15-49 years old. They are divided into: testicular seminoma: 40% of germ cell tumors 1 non-seminomatous germ cell tumor: 60% of germ cell tumors  testicular...

Bilobed testis

Bilobed testis, also known as incomplete unilateral polyorchidism, is a very rare variant in children. Pathology The exact etiology is unknown but is thought to be a form of incomplete polyorchidism. It has been proposed that bilobed testis results from the incomplete division of the urogenita...

Testicular lymphoma

Testicular lymphoma is an uncommon testicular malignancy. Lymphoma can involve the testes in three ways: primary site of extranodal disease (primary testicular lymphoma) secondary involvement of systemic disease primary manifestation of subclinical systemic disease This article is concerned ...

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