A Case of Infantile Myofibroma in the Pre-auricular Area

Korean Journal of Head & Neck Oncology 2016;32(2):9-13.
Published online November 30, 2016.

Deok Su Kim;Gyu Ho Jang;Jeong Kyu Kim

전이개에 발생한 유아성 근섬유종 1례

김덕수;장규호;김정규

Abstract

Infantile myofibromatosis is a rare benign neoplasm which is usually found in males. Most cases of the infantile myofibromatosis are discovered before the age of two years and about half of cases are found at muscle, tendon, and soft tissue of head-neck region. However, it is especially uncommon that infantile myofibroma occurs at the pre-auricular area. In current case, we report a twenty two months old male patient with 2.5 x 1.5cm sized pre-auricular mass at right side. It was surgically removed and histologically showed broad bundle of plump myoid spindle cells with eosinophilic cytoplasm and weakly positive smooth muscle actin expression in myoid cells. In three months of follow up, there was no recurrence.

Key Words: Infantile myofibroma, Pre-auricular area