Tang S, Liu Z, Quan X, Qin J, Zhang D
Children's Hospital, Chong-qing University of Medical Sciences, China.
J Pediatr Orthop. 1998 Mar-Apr;18(2):214-8.
Fifty cases, 16 with sternocleidomastoid pseudotumor of infants (SCMPOI) and 34 with congenital muscular torticollis (CMT), were investigated by light and electron microscopy. The ultrastructure of the pseudotumor revealed that there were myoblasts, fibroblasts, myofibroblasts, and mesenchyme-like cells, which consisted of fibrous tissue and were regarded as fibroblasts only in the literature. The myoblasts showed the various stages of differentiation and degeneration. For those cases without mass, the collagen fibrils and fibrocytes were often arranged in tight parallel bundles in which some muscles showed normal structure and some with decreased myofibrillae. The mesenchyme-like cells and myoblasts found in the pseudotumor may be the key point to its pathologic characteristics.
对50例患者进行了光镜和电镜检查，其中16例为婴儿胸锁乳突肌假瘤（SCMPOI），34例为先天性肌性斜颈（CMT）。假瘤的超微结构显示存在成肌细胞、成纤维细胞、肌成纤维细胞和间充质样细胞，这些细胞构成纤维组织，在文献中仅被视为成纤维细胞。成肌细胞呈现出不同的分化和退变阶段。对于那些没有肿块的病例，胶原纤维和纤维细胞常紧密平行排列成束，其中一些肌肉结构正常，一些肌原纤维减少。假瘤中发现的间充质样细胞和成肌细胞可能是其病理特征的关键所在。
