Nodular fasciitis: a benign mimicker of soft tissue malignancies

Resumen

Nodular fasciitis is a benign, self-limited, subcutaneous tumour that mainly affects adults around the 4^th life decade. Its clinical and histopathological similarity with malignant soft-tissue sarcomas represent a diagnostic difficulty in professionals who are unfamiliar with these diagnoses. Since most descriptions derive from Caucasian patients, further awareness of this relatively rare disease is necessary in underrepresented populations. Here, we present a case of nodular fasciitis in a 49-year-old Mexican male who had been surgically intervened for a misdiagnosed epidermal cyst. After an adequate biopsy and imaging studies, the diagnosis of nodular fasciitis was confirmed, and the lesion was fully excised. This case illustrates the importance of adequately studying subcutaneous masses that can mimic a wide array of benign and malignant diseases.