A Case of Ectopic Hamartomatous Thymoma

Korean Journal of Head & Neck Oncology 2010;26(1):37-40.
Published online May 30, 2010.

Youngtaek Oh;Young Sam Yoo;Jeong Hwan Choi;Kyoung Rai Cho;Geon Heo;Sang Woo Kim;Hyun-Jung Kim

이소성 유과오종성 흉선종 1예

오영택;유영삼;최정환;조경래;허 건;김상우;김현정

Abstract

Ectopic hamartomatous thymoma is a rare benign tumor of the lower neck occurring in the male adult pre-dominantly. The origin of this tumor has been debated, but it is now believed to arise from remnants of the cer-vical sinus of His from early development. They are composed of epithelial, adipocytic, and spindle cells in var-iable amounts. Recognition of ectopic harmatomatous thymoma is important and needs to be differentiated from high-grade sarcomas such as synovial sarcoma or glandular malignant peripheral nerve sheath tumor. We here report on a case of ectopic hamartomatous thymoma arising in the left lateral neck of 33-year-old male patient.

Key Words: Ectopic thymoma, Hamatomatous thymoma