Nodular Swelling with Chronic Discharging Sinus on Leg - An Unusual Presentation of Eccrine Acrospiroma with Cytohistopathological Correlation

Background: Eccrine acrospiroma also called as nodular hidradenoma and clear cell hidradenoma is a rare sweat gland tumour seen in females involving head, neck and trunk. Although the diagnosis is by histopathological examination FNAC can help in early detection. Case details: We describe a rare clinical presentation of an Eccrine Acrospiroma as a swelling with overlying chronic discharging sinus on the shin of tibia with salient cytohistological features of eccrine acrospiroma in right leg of an elderly female. Conclusion: Eccrine Acrospiroma is an uncommon skin adenexal tumour arising from eccrine or apocrine gland and may present with discharging sinus on lower extremity. The clue to the diagnosis is its superficial location in the skin. FNAC helps in early diagnosis and management by wide excision. However histopathological examination is required for definitive diagnosis. The report emphasizes on complete excision and checking of margins to prevent recurrence of the tumour.