大腿の筋肉内脂肪腫の1例 [in Japanese] A CASE OF INTRAMUSCULAR LIPOMA OF THE THIGH [in Japanese]
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大腿の筋肉内脂肪腫の1例を報告した.<br> 症例は75歳,男. 10年前に自覚した左大腿前面の腫瘤が,増大傾向を示し疼痛も出現してきたので受診した.腫瘤は柔らかく小鶏卵大で皮下深部に存在し,安静時は触知しにくいが,大腿四頭筋を緊張させると皮膚から盛り上がり,弾性硬の球状腫瘤として明瞭に触知した.局所所見, USおよびCTの所見から大腿直筋内の脂肪腫と診断し,切除術を行った.腫瘤は,最大径3.5cmで被膜を持たず,病理組織学的に筋肉内脂肪腫の浸潤型と診断された.<br> 筋肉内脂肪腫は稀な腫瘍で,その多くは通常の皮下脂肪腫とは異なり浸潤的に発育する性質がある.筋肉内脂肪腫は術後再発する場合があるので,手術時には周囲の健常な筋を含めて切除する必要がある.
A case of intramuscular lipoma of the thigh was reported.<br> A 75-year-old man was seen at the hospital because of enlargement of a mass with pain in the left thigh which had been noticed about ten years before. The mass was deep-seated and vaguely palpable at rest, but it became apparent only with contraction of the quadriceps muscle. Then the lesion was elevated above the skin and clearly palpated as a hard spherical tumor, small hen's egg-sized. The tumor was diagnosed as lipoma in the muscle based on local aspects and imaging findings obtained by CT and ultrasonography. Operation was performed. The excised specimen, 3.5cm in size and not encapsulated, was pathologically intramuscular lipoma of infiltrating type.<br> Intramuscular lipomas are rare and most of them show a tendency to replace muscle tissue by fat growth differently from typical subdermal lipomas. Resection including some normal muscle tissue must be recommended to prevent the local recurrence.
- The journal of the Japanese Practical Surgeon Society
The journal of the Japanese Practical Surgeon Society 58(6), 1387-1390, 1997-06-25
Japan Surgical Association