Chondroid Lipoma
赵明 刘正智
更新时间:2019-01-21 13:26:00
概述:
发病部位:四肢近端和肢带、罕见于躯干、头颈部、手足等。
诊断要点:
2. 肿瘤1.5-11cm(中位大小约4.0cm),可位于皮下至肌内等多个平面,大体上边界清楚,可见包膜,切面分叶状;
3. 镜下肿瘤边界清楚,由薄的纤维性间质分隔呈小叶状;
4. 小叶由位于软骨黏液样基质内的片状、巢状或索状圆细胞以及数量不等的成熟脂肪细胞组成;
5.圆细胞胞浆空泡状或嗜酸性颗粒状,有时可见多个空泡形成并挤压核形成核切迹从而类似于脂肪母细胞;
6. 瘤细胞核卵圆形或肾形,核染色质均匀细腻,核仁不明显或含小的嗜碱性核仁,无核异型性,核分裂像罕见;
7. 基质呈软骨黏液样或黏液玻璃样变样,围绕嗜酸性或空泡状细胞周围形成类似于软骨的陷窝;
8、肿瘤内血管丰富(各种口径大小的血管均可见,较小的血管常见血栓形成),常见灶性出血和纤维化,偶见钙化或骨化以及慢性炎细胞浸润。
免疫组织化学染色:
分子标记:
鉴别诊断:
预后:
治疗:
参考文献:
1. Flucke U et al: Presence of C11orf95-MKL2 fusion is a consistent finding in chondroid lipomas: a study of eight cases. Histopathology. 62(6):925-30, 2013
2. Thway K et al: Chondroid lipoma: an update and review. Ann Diagn Pathol. 16(3):230-4, 2012
3. De Vreeze RS et al: Delineation of chondroid lipoma: an immunohistochemical and molecular biological analysis. Sarcoma. 2011:638403, 2011
4. Ballaux F et al: Chondroid lipoma is characterized by t(11;16)(q13;p12-13). Virchows Arch. 444(2):208-10, 2004
5. Thomson TA et al: Cytogenetic and cytologic features of chondroid lipoma of soft tissue. Mod Pathol. 12(1):88-91, 1999
6. Kindblom LG et al: Chondroid lipoma: an ultrastructural and immunohistochemical analysis with further observations regarding its differentiation. Hum Pathol. 26(7):706-15, 1995
7. Nielsen GP et al: Chondroid lipoma, a tumor of white fat cells. A brief report of two cases with ultrastructural analysis. Am J Surg Pathol. 19(11):1272-6, 1995