Poroid hidradenoma: a case report

Abstract

Introduction: Poroid hidradenoma is a variant of the eccrine poroma that belongs to the group of poroid neoplasm. It presents architectural features of hidradenoma and cytologic features of poroid neoplasm. To date, very few cases of this entity have been reported in the literature.Case presentation: An eighty-one-year-old man whose past medical history was consistent for a Parkinson’s disease presented with a presternal nodular mass. Physical examination revealed a 6 cm, painless, and pedunculated presternal tumefaction. Chest Ultrasound examination revealed a heterogeneous tumor with anechoic areas and cystic component. CT-scan showed a presternal subcutaneous mass presenting a dual component sloid and cystic with stigmates of recent bleeding. A total surgical excision was performed and histologic examination concluded to a poroid hidredenoma.Conclusion: Poroid hidradenoma is the newest variant added to poroid neoplasm. Histologic characteristics may be challenging necessitating a thorough sampling. Treatment is based on surgical resection in order to to prevent from a possible recurrence or malignant transformation.

Keywords

• poroid hidradenoma
• eccrine poroma
• surgical resection