ECCRINE SPIRADENOMA AS A DIFFERENTIAL FOR TENDON SHEATH GCT OF THE HAND - A DIAGNOSTIC DILEMMA

Eccrine spiradenoma is a rare tumor arising from the sweat glands. It usually presents itself in the head and neck region, with only a few reported cases in the literature of hand eccrine spiradenomas. It is usually seen in the age group of 15-35 years. Here, we report a case of a patient in her 50s presenting a mass over the dorsum of the hand and clinically closely mimicking tendon sheath giant cell tumor (GCT). Investigations supported the clinical diagnosis and provided extra information on possible malignant transformation. A surgical excision was performed and sent for histopathological examination which confirmed the diagnosis. It is also interesting to notice from our case that the need for histopathological evidence should not be neglected despite ultrasonography and Magnetic Resonance Imaging (MRI) being very useful as diagnostic investigations.