[A case report of fibromatosis originating from the right anterior scalene muscle].

Fibromatosis is rare and locally invasive tumor arising from musculoaponeurotic tissue, and also has a high postoperative recurrence rate. So, we must perform wide resection of the tumor and surrounding tissue. A case of fibromatosis originating from the right anterior scalene muscle was reported. A 31-year-old female in whom cervical fibromatosis had been pointed out by her home doctor, was referred to our hospital for treatment. CT scan, MRI and angiography showed that the tumor developed from the cervical lesion to the upper thoracic and invaded the right subclavian artery. The tumor originating from right anterior scalene muscle was found at operation. The combined resection consisted of the right anterior salene muscle with tumor, phrenic nerve, subclavian artery and vein, and chest, well including the first and second rib and clavicular bone, because of wide invasion of tumor to surrounding organs. Reconstruction of the subclavian artery and vein was performed by PTFE vascular prostheses. The postoperative course was uneventful, she is now in good health 8 months after operation with good blood flow via the reconstructed vessels confirmed by angiography, without any sign of recurrence.