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The Korean Journal of Pathology 1999;33(6): 467-470.
Intraosseous Lipoma A report of four cases.
Hye Jeong Choi, Mi Jin Gu, Joon Hyuk Choi, Duk Seop Shin, Kil Ho Cho
1Department of Pathology, Yeungnam University College of Medicine, Taegu 705-717, Korea.
2Department of Orthopedic Surgery, Yeungnam University College of Medicine, Taegu 705-717, Korea.
3Department of Diagnostic Radiology, Yeungnam University College of Medicine, Taegu 705-717, Korea.
ABSTRACT
Intraosseous lipoma is a very rare primary tumor of the bone. We report four cases of intraosseous lipoma. The patient ranged in age from 34 to 59-year-old (median age: 35 year-old). There were three men and one woman. All of four cases presented with pain. The involved bones were calcaneus in two cases, tibia in one case and ilium in one case, respectively. In all cases plain x-ray film revealed well-defined lytic lesion. Their size ranged 2 to 4.5 cm (mean size: 3.5 cm). Histologic examination showed mature adipose tissue. Three cases showed secondary changes such as atrophic bone, fat necrosis, fibrosis, dystrophic calcification, and reactive ischemic bone formation. The clinicopathologic and roentgenographic correlation are necessary in establishing correct diagnosis of this tumor.
Key Words: Bone; Lipoma; Calcaneus
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