title: Treatment for intramuscular lipoma frequently confused with sarcoma: a 6-year restrospective study and literature review.
abstract: BACKGROUND
  Intramuscular lipoma is a very rare form of lipoma, known to be categorized as an infiltrating lipoma due to its tendencies to infiltrate the muscle or the synovium. Contrary to other subcutaneous lipomas, even after surgical removal, the rate of local recurrence ranges at a high rate from 50∼80% and differential diagnosis with liposarcoma is very difficult.
  
  
  METHODS
  A retrospective chart review was conducted for a total of 27 patients. Before performing a surgery based on the types of mass, a radiologic imaging study was performed. An intraoperative frozen biopsy was performed on every patient and the results were compared. The progress was monitored every 3 to 6 months for recurrence or struggles with rehabilitation.
  
  
  RESULTS
  There were 13 male and 14 female patients with an average age of 54.6. The average tumor size was 8.2 cm (1.1 cm∼31.6 cm). Excision was performed using a wide excision. All 27 individuals were initially diagnosed as intramuscular lipoma; however, 1 of the patients was rediagnosed as liposarcoma in the final checkup. The patients had an average of 3 years and 1 month of follow-up and did not suffer recurrences.
  
  
  CONCLUSIONS
  Thus, it is essential that a frozen biopsy is performed during the surgery in order to identify its malignancy. And a wide excision like malignant tumor operation is a principle of treatment.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Hyun Ho
authors.identifier: 0000-0001-7072-9882
authors.initials: HH
authors.lastname: Han
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Jong Yun
authors.initials: JY
authors.lastname: Choi
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Bommie F
authors.initials: BF
authors.lastname: Seo
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Suk-Ho
authors.identifier: 0000-0003-1866-2910
authors.initials: SH
authors.lastname: Moon
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Deuk Young
authors.initials: DY
authors.lastname: Oh
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Sang Tae
authors.initials: ST
authors.lastname: Ahn
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Jong Won
authors.initials: JW
authors.lastname: Rhie
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008067:Lipoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012189:Retrospective Studies; D012509:Sarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery