A Case of Nasolabial Groove Nodular Fasciitis in Infancy

ABSTRACT

Nodular fasciitis is a benign proliferative spindle-cell lesion that presents as a rapidly growing mass with rich cellularity and mitotic activity, leading to its frequent misidentification of a sarcoma. Most cases of nodular fasciitis are diagnosed in adults aged 20-40 years and is rarely seen during the first 4-5 years of life. Because of its rapid growth and bony erosion, it often mimics malignancy. We report a case of an 18-month-old infant with a rapidly growing mass on the right nasolabial fold. Because of the anatomic location and CT findings, we first suspected nasolabial cyst. However, it proved to be an intramuscular type of nodular fasciitis, a very rare occurrence in infancy.