Osteolipoma of knee: a rare case report

  • Arnab Chaudhuri Medical College, Kolkata. West Bengal University of Health Sciences.
  • Ira Mondal Medical College, Kolkata. West Bengal University of Health Sciences.
  • Aparajita Samaddar Medical College, Kolkata. West Bengal University of Health Sciences.
  • Nandini Das Medical College, Kolkata. West Bengal University of Health Sciences.
  • Dipanwita Nag Medical College, Kolkata. West Bengal University of Health Sciences.
Keywords: Osteolipoma, Ossifying lipoma, Knee joint

Abstract

Lipomas are the most common benign soft tissue tumors and appear in any part of the body. They typically consist of mature adipose tissue. Osteolipoma is an extremely rare histologic variant of lipoma that contains mature lamellar bone within the tumor and osteolipoma independent of bone tissue are very rare. We report a case of histologically confirmed osteolipoma independent of bone located just above left knee. A 61 year old female presented with medial sided left knee pain of 6 month duration. X-ray demonstrated a partially calcified 3.5 cm diameter mass located in anterior to the distal medial femur. Histologic examination of an excisional biopsy showed the lesion to be an osteolipoma. Osteolipoma is a rare histologic variant of lipoma with osseous metaplasia, but should be considered in the differential of a fat-containing neoplasm with ossification. DOI: 10.21276/AABS.2017.1320

Author Biographies

Arnab Chaudhuri, Medical College, Kolkata. West Bengal University of Health Sciences.
Medical Officer, Department of Pathology.
Ira Mondal, Medical College, Kolkata. West Bengal University of Health Sciences.
PGT, Department of Pathology.
Aparajita Samaddar, Medical College, Kolkata. West Bengal University of Health Sciences.
Demonstrator, Department of Pathology
Nandini Das, Medical College, Kolkata. West Bengal University of Health Sciences.
Demonstrator, Department of Pathology.
Dipanwita Nag, Medical College, Kolkata. West Bengal University of Health Sciences.
Professor, Department of Pathology.

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Published
2017-02-21
Section
Case Reports