Rowland Fauniel, Call Catherine, Mujtaba Bilal, Amini Behrang, Wang Wei-Lien
University of Texas John P. and Katherine G. McGovern Medical School, 6431 Fannin St., Houston, TX, 77030, USA.
Skeletal Radiol. 2019 Apr;48(4):625-628. doi: 10.1007/s00256-018-3053-y. Epub 2018 Sep 5.
Leiomyomas are benign tumors of smooth muscle cells. Leiomyomas of somatic soft tissue are a specific class of leiomyoma believed to arise from the smooth muscle cells found in the walls of blood vessels and represent less than 4% of benign, somatic soft tissue tumors. Of the somatic soft tissue tumors, approximately one-third will become calcified. We report an intramuscular, calcified leiomyoma arising from the left deltoid of a 47-year-old Caucasian male. To the best of the authors' knowledge, this is the first reported case of a calcified, intramuscular leiomyoma of the deltoid. Imaging studies and patient presentation were initially suggestive of tumoral calcinosis or myositis ossificans. It was not until pathologic examination that the correct diagnosis of the calcified leiomyoma was made. Leiomyoma should be included in the differential diagnosis of calcified soft tissue masses. If excised with adequate margins, recurrence is unlikely.
平滑肌瘤是平滑肌细胞的良性肿瘤。体部软组织平滑肌瘤是平滑肌瘤的一种特殊类型，被认为起源于血管壁中的平滑肌细胞，占良性体部软组织肿瘤的比例不到4%。在体部软组织肿瘤中，约三分之一会发生钙化。我们报告一例47岁白种男性左侧三角肌的肌内钙化平滑肌瘤。据作者所知，这是首例报道的三角肌钙化肌内平滑肌瘤病例。影像学检查和患者表现最初提示肿瘤性钙化或骨化性肌炎。直到病理检查才做出钙化平滑肌瘤的正确诊断。平滑肌瘤应纳入钙化软组织肿块的鉴别诊断。如果切除边缘足够，复发的可能性不大。
