Porocarcinoma Arising in a Ganglion Cyst: A Case Report and Review of the Literature

Park,  Ie Hyon; Kim,  Tae Hoon; Kwon,  Sung Tack; Park,  Ji Ung

doi:2016.25.2.56

Arch Hand Microsurg > Volume 25(2); 2016 > Article

Case Report

Archives of Hand and Microsurgery 2016;25(2):56-59.
Published online November 30, 2016.
DOI: https://doi.org/10.15596/ARMS.2016.25.2.56

Porocarcinoma Arising in a Ganglion Cyst: A Case Report and Review of the Literature

Ie Hyon Park, Tae Hoon Kim, Sung Tack Kwon, and Ji Ung Park<sup>1,*</sup>

¹Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul, Korea.
²Department of Plastic and Reconstructive Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea. alfbskan@gmail.com

Received: 24 April 2016 • Revised: 9 July 2016 • Accepted: 10 July 2016

Abstract

Eccrine porocarcinoma is a rare malignant neoplasm of the eccrine sweat gland that often occurs in the lower extremities, and usually affects elderly individuals. Most cases of eccrine porocarcinoma arise de novo. We encountered a case of a large porocarcinoma arising in a pre-existing ganglion cyst in the knee. The malignant tumor was excised widely, and the defect was reconstructed using a free anterolateral thigh flap.

Key Words: Ganglion cysts, Knee, Eccrine porocarcinoma, Anterolateral thigh flap