第21巻 2025年4月　第2号

■症例報告

胸腔内に発生した脂肪芽腫の男児例
泉田　健介¹, 早川　潤¹, 竹下　輝¹, 高橋　翼², 許田　典男³, 右田　真^1
1日本医科大学武蔵小杉病院小児科
²日本医科大学武蔵小杉病院小児外科
³日本医科大学武蔵小杉病院病理診断科

A Case of Intrathoracic Lipoblastoma in a 6-year-old Boy
Kensuke Izumida¹, Jun Hayakawa¹, Hikaru Takeshita¹, Tsubasa Takahashi², Norio Motoda³ and Makoto Migita^1
1)Department of Pediatrics, Nippon Medical School Musashi Kosugi Hospital
²⁾Department of Pediatric Surgery, Nippon Medical School Musashi Kosugi Hospital
³⁾Department of Pathology, Nippon Medical School Musashi Kosugi Hospital

A 6-year-old boy was referred to us after an abnormal shadow was detected in the left upper lung field on a chest X-ray taken as part of a school cardiac screening program. We suspected an intrathoracic lipoblastoma on the basis of blood test results and CT, MRI, and other imaging findings, and we performed a surgical resection for diagnostic and therapeutic purposes. The pathological diagnosis was also lipoblastoma, and two years have passed without any postoperative complications. Lipoblastoma is a relatively rare benign tumor that is most commonly found on the trunk and extremities of infants, but cases like this one of a lipoblastoma in the thoracic cavity are extremely rare.

日医大医会誌 2025; 21(2), 175-180

Key words
lipoblastoma, pediatric, adipocytic tumor, chest wall

Correspondence to
Kensuke Izumida, Department of Pediatrics, Nippon Medical School Musashi Kosugi Hospital, 1-383 Kosugi-cho, Nakahara-ku, Kawasaki, Kanagawa 211-8533, Japan
E-mail：s14-007ik@nms.ac.jp

受付：2025年1月16日　受理：2025年1月29日