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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Clinical features and ultrasound findings of a rare musculoskeletal system disease–neuromuscular choristoma

Fig. 3

Images of patient #4. A 10-year-old girl with a left cervical mass and neuropathic pain. Ultrasound images showed an irregular heterogeneous hypoechoic solid lesion at the course of the left brachial plexus (A) with color Doppler flow imaging grade I (B). MRI demonstrated a 5.5 × 5.5 × 3.3 cm mass with an irregular shape consistent with ultrasound images and showed that the tumor invaded part of the left brachial plexus (C). The patient underwent tumor and affected brachial plexus resection and nerve transplantation; note that the left brachial plexus was partly surrounded by the tumor, and partly pressed and narrow (D). Surgical specimens showed thickened C7 nerve root (E) and desmoid-type fibromatosis (DTF) (F). Micrograph (H&E) of the cross-section affected brachial plexus showed endoneurial intercalation of mature skeletal muscle fibers among the peripheral nerve fascicles and diagnosed neuromuscular choristomas (NMC) (G, H). Immunohistochemical staining demonstrated strong beta-catenin expression in NMC-DTF cells (I)

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