Adenomatoid Tumour

Adenomatoid Tumour

An uncommon benign mesothelial tumour of the genital tract, which is the commonest paratesticular tumour. It occurs in the ovary, testis and epididymis, as well as the adrenal, mesentery, pancreas, uterus and fallopian tube.
DiffDx Vascular tumours, lymphangiomas, leiomyoma (fibroid).
DiffDx, paratesticular mesothelial tumours Mesothelial hyperplasia, mesothelioma, well differentiated papillary mesothelioma.
Management Excision if symptomatic.
References in periodicals archive ?
Benign lesions that were histopathologically diagnosed included mature teratoma, adenomatoid tumour, granulomatous orchitis, chronic orchitis, epididim-orchitis, epididymal cyst, Leydig cell tumour, Sertoli cell tumour, fibrous pseudotumour, tunica albugenia cyst, epidermal cyst, leiomyoma, fibroma, juvenile granulosa cell tumour, granulomatous epididymitis, and microlithiasis with epididymal abscess.
Nephrogenic adenoma has also been referred to as mesonephric adenoma/metaplasia, adenomatoid tumour, and adenomatoid metaplasia [7].
Immunohistochemical evidence for mesothelial origin of paratesticular adenomatoid tumour.
3] Benign paratesticular tumours include adenomatoid tumour, papillary cystadenoma, fibroma, lymphangioma, adrenal rest tumours and dermoid cysts.
2 Cystic lymphangioma-like adenomatoid tumour of the adrenal gland may be included to the histopathologic differential diagnosis.
They are characterized by tubules and cleft-like spaces lined by flattened cells and lymphangioma is the main histologic mimic of adenomatoid tumour.
As a result, the lesion is known by many names, including adenoameloblastoma, adenoameloblastic odontoma, epithelial tumour associated with developmental cysts, ameloblastic adenomatoid tumour and adenomatoid or pseudoadenomatous ameloblastoma.
INTRODUCTION: Adenomatoid tumour of epididymis (ATE) was first described by Golden et al as a small mass in scrotal region without any clinical symptoms.
Immunohistochemical staining was strongly positive for endothelial markers (CD31 and CD 34), and negative for mesothelial (Calretinin, WT1) and lymphatic markers (D2-40), excluding an adenomatoid tumour.
The most common tumours that arise from the paratesticular tissue are benign neoplasms, such as leiomyoma, lipoma and adenomatoid tumour.
8,9) These lesions comprise about 6% of paratesticular masses, second to adenomatoid tumours.
Multiple adenomatoid tumours in the liver and peritoneum.