Intramuscular lipoma is a rare benign tumor. It refers to infiltrating lipoma because it originates between skeletal muscle abundles and infiltrates into the intramuscular septa. Kransdorf reported that the majority of lipomas were located in the trunk, head/neck, and lower extremity. In addition, in research by Kindlom et al., on 43 cases of muscular infiltrative lipoma, there was no case involving the chest wall. We report on a case of intramuscular lipoma on the anterior chest wall. The lesion was removed completely and histopathological findings showed that mature adipocytes had infiltrated serratus anterior muscle in a diffuse manner. After treatment, the patient has shown no complication or evidence of recurrence.

• 백주영(국립경찰병원 내과) | Joo Yeong Baeg
• 신동환(국립경찰병원 내과) | Dong Hwan Shin
• 신광식(국립경찰병원 내과) | Kwang Sik Shin
• 권민구(국립경찰병원 내과) | Min Gu Kwon
• 유창민(국립경찰병원 내과) | Chang Min Yu
• 송철민(국립경찰병원 흉부외과) | Cheol Min Song
• 배지윤(국립경찰병원 병리과) | Ji Yoon Bae Corresponding author