Aggressive Angiomyxoma in Males

Rare paratesticular aggressive angiomyxoma mimicking an epididymal tumor in an 82-year-old man: Case report

Aggressive angiomyxoma (AAM) is a rare mesenchymal myxoid tumor, and most cases occur in the pelvic region or perineum of adult females. AAM is very rare in males. Most of these cases have been diagnosed in patients aged 30–60 years, and the tumors involved the pelvic cavity, scrotum, or spermatic cord. AAM can mimic inguinal hernia, hydrocele, or paratesticular neoplasm. Four male cases have been reported with paratesticular AAM mimicking a testicular/epididymal tumor, and to the best of our knowledge, this is the oldest patient in the literature. Because of its rarity, making an exact diagnosis before surgery is difficult. Herein, we present a case of AAM in an 82-year-old man and review the literature.

Aggressive Angiomyxoma-Report of a Rare Male Buttock Lesion

Aggressive angiomyxoma is a very rare benign tumor for male population with fewer than 50 cases reported since the description of this tumor. Most documented cases of aggressive angiomyxomas were found in genital, perineal, and pelvic regions in women of child bearing age. We report a case of a massive (> 20 cm) aggressive angiomyxomas in a man who presented with perineal swellings. Macroscopically the mass was highly vascular and lobulated with high similarity to plexiform neurofibroma. Microscopic examination revealed a hypocellular tumor comprising bland oval and spindle-shaped cells along with vessels of varying calibre. The accompanying stroma was myxocollagenous. Immunohistochemical staining showed CD34 and focal estrogen receptors positivity and negative staining for S100, actin, desmin, and progesterone receptors. The histologic and immunohistochemical features favored the diagnosis of aggressive angiomyxoma. Despite the rarity of such tumor in the male population, aggressive angiomyxoma should be considered in the differential diagnosis when encountering chronic para-perineal lesions.

Rare paratesticular aggressive angiomyxoma with negative oestrogen and progesterone receptors in a male patient

Aggressive angiomyxoma (AAM) is a rare mesenchymal myxoid tumour localised to the pelvis and/or perineum in adult females in reproductive age group. AAM is very rare in males, with <50 cases described in literature, and involves scrotum, spermatic cord and perineum. It is slow growing, with a marked tendency for local recurrence after excision, but without metastatic potential. We present a rare case of a paratesticular AAM in a man aged 53 years. Tumour cells were immunoreactive for desmin, smooth muscle actin (SMA), vimentin, CD34 and were negative for S100. Unlike AAMs in females which express oestrogen receptor (ER) and/or progesterone receptor (PR) in >90% cases, the tumour cells in our case were negative for ER and PR, suggesting that the hypothesis that these markers play a role in tumour development and pathogenesis, does not apply in males. Androgen receptor positivity was noted in 2%-5% tumour cells.