钙化性鞘膜纤维瘤:好发于手指或手掌,多位于筋膜或骨膜旁;特征性的镜下表现为幼稚的肌纤维母细胞围绕软骨小岛栅栏状排列,部分病例中尚可见破骨样巨细胞浸润;
炎性肌纤维母细胞瘤:罕见钙化灶或砂粒体形成,肌纤维母细胞形态相对幼稚,免疫组化染色表达SMA和desmin,半数以上可表达ALK等;
IgG4相关性疾病:纤维化常表现为席纹状,间质可见多量淋巴浆细胞浸润,后者免疫组化染色可见多量IgG4阳性的浆细胞;此外尚可见闭塞性静脉炎改变。
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Agaimy A, Bihl MP, Tornillo L, Wunsch PH, Hartmann A, Michal M. Calcifying fibrous tumor of the stomach: clinicopathologic and molecular study of seven cases with literature review and reappraisal of histogenesis. Am J Surg Pathol 2010;34:271-8.