Sternocleidomastoid intramuscular lipoma Abd Mutalib NOR SHAHIDA 1 , Najeb MD SOLEH 1 , Irfan MOHAMAD 1 , Aniza HASSAN 2 , Nor Hayati OTHMAN 2 1 Department of Otorhinolaryngology-Head & Neck Surgery and 2 Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia. ABSTRACT Lipoma is the most common benign soft tissue tumour with most located in the superficial subcutane- ous plane. However, some are located in the deeper plane. Location in the head and neck regions are less common compared to the other parts of the body. Deep seated lipomas are either inter-muscular or intramuscular. We present a case of a simple subcutaneous neck lipoma in a 60-year-old Malay man which turned out to be an intramuscular sternocleidomastoid lipoma. Keywords: Lipoma, intramuscular, sternocleidomastoid INTRODUCTION Lipoma is the most common benign soft tis- sue tumour with most located in the superfi- cial subcutaneous plane. Subcutaneous lipo- ma arises between the skin and deep fascia and is typically a soft and mobile lump. Intra- muscular lipoma is a benign neoplasm con- sisting of mature adipose tissue with sparse blood vessels. It has the ability to invade the muscle or grow between the muscles. 1, 2 Characteristically, it infiltrates adjacent tis- sues with a tendency to recur after excision. 1, 2 Commonly presentation is with a painless mass without evidence of nerve compression or motor dysfunction of the involved muscle. A characteristic feature of intramuscular lipo- ma is the change in consistency from soft and flat to a well-defined and firm mass during contraction of the involved muscle. Case Report Correspondence author: NS ABD MUTALIB Depart of Otolaryngology–Head& Neck Surgery, School Of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan,Malaysia. Tel: +6097676416, Fax: +6097676424 E mail: drn_shahida@yahoo.com Brunei Int Med J. 2012; 8 (3): 154-157 CASE REPORT A 60-year-old gentleman, non-smoker, com- plained of right neck swelling which had been increasing in size for the previous month. This painless swelling had already beenpresent for the past five years. The patient did not seek any medical consultation as it was not causing any symptoms. He denied prior history of