Isolated Nodular Kaposi Sarcoma of the Finger Pulp: A Case Report

Abstract

Ghada Moumneh, Fadhel Alherz, Bushra Mohandes, Fatimah Alismail and Sulaiman Al Habib

Introduction: Kaposi Sarcoma (KS) is a malignant vascular tumor linked to Human Herpes Virus 8 (HHV-8) infection, characterized by the proliferation of spindle-shaped mesenchymal cells and dilated capillaries. KS commonly affects mucocutaneous sites, particularly in the lower extremities, with rare extracutaneous involvement.

Case: We report a case of a 78-year-old male with multiple chronic diseases who presented with a 2-month history of a rapidly enlarging dome-shaped nodule on his left index finger. Surgical excision and histopathological analysis confirmed the diagnosis of Kaposi sarcoma, with the lesion showing characteristic spindle cells and positive immunohistochemical staining for HHV8.

Discussion: This case highlights the importance of recognizing and considering KS in the differential diagnosis of tumors, such as the hand. The unusual presentation and the critical role of histopathology and immunohistochemistry in confirming the diagnosis underscore the need for careful differential diagnosis and thorough surgical management to reduce the risk of recurrence.

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