Nodular fasciitis is a benign tumor of soft tissues originating from the proliferation of fibroblasts and myofibroblasts, generally developing between the subcutaneous tissue and the underlying muscular layer. Nodular fasciitis predominantly localizes in the upper extremities, trunk, head and neck. Biomolecular and immunohistochemical analyses result essential to demonstrate the benign origin of the process, also confirmed by very low recurrence rate after complete excision, which represents the gold standard for treatment. We report the case of a 36 years-old man who developed a nodular protuberance clinically evident in the upper-left side of the thorax. We further, highlight the main characteristics of this rare neoplasm trough a thorough review of the literature.
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