Primary tumors of the epididymis are rare. Adenomatoid tumors are benign, usually found within the wall of fallopian tubes or beneath the uterine serosa. They are most frequently diagnosed as benign tumors of the epididymis and represent 30% of paratesticular tumors. The origin of this tumor is mesothelial cells. Leiomyoma are less common in the paratesticular localization. The origin of this tumor is smooth muscle cells. Clinically, these tumors are indistinctive with a painless mass of the scrotum. Here, we reported a case of combined leiomyoadenomatoid tumor. The histogenesis of this lesion remains unknown. This entity can be the result of a collision of the two tumors, or it can be a subtype of adenomatoid tumors with smooth muscle hyperplasia. This case showed the difficulty that occurs in the identification of this kind of lesion. Only one case of this entity in the epididymis was described in the literature. Leiomyoadenomatoid tumor is a benign neoplasm. In our case, this lesion was surgically removed in toto and no recurrence was observed.
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| http://dx.doi.org/10.1159/000365675 | DOI Listing |
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Epididymal leiomyoadenomatoid tumor: A case report of a rare benign paratesticular mass.
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Department of Urology, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA.
Primary tumors of the epididymis are rare and commonly benign in nature. Leiomyoadenomatoid tumors are a rare subvariant of adenomatoid tumors that combines features of leiomyomas. Tumor histology is notable for tubular spaces lined by mesothelial cells with a proliferative spindle cell component.
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Leiomyoadenomatoid tumors of the epididymis are exceedingly rare biphasic tumors composed of an adenomatoid component in the form of gland-like structures lined by single flat or cuboidal cells admixed with smooth muscle. Radiological and gross findings cannot distinguish leiomyoadenomatoid tumors from the more common classic adenomatoid tumors or leiomyomas, and careful microscopic examination is critical in the identification of this esoteric variant. The histogenesis of this entity remains ambiguous.
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View Article and Find Full Text PDFBenign tumours of the epididymis are rare, and the most common tumour types include adenomatoid tumours, representing more than half of all cases, and leiomyomas. Here, we reported a case of leiomyoadenomatoid tumours of the epididymis, a very rare, benign histological entity with only few cases described in the English literature, which have been reviewed and summarised. Clinically, the lesion presented as a solitary mass growing at the level of the tail of the right epididymis.
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