Fibromatosis Colli, A Forgotten Entity

Fibromatosis colli or congenital muscle torticollis of infancy is a rare cause of neck swelling that originates from the sternocleidomastoid muscle (SCM). It typically presents as an incidental finding of a firm and painless neck swelling by concerned parents. The cause of this pathology is unknown. Ultrasonography (US) is the modality of choice to confirm diagnosis andtreatment is mainly by physiotherapy. However, in inexperienced doctors’ hands, this pathology may be over investigated with unnecessary minimally invasive techniques such as fine needle aspiration or biopsy to obtain diagnosis. We report a case of a one-month-old boy presented with a painless right neck swelling, management, and literature review with the objective to remindthe fraternity of this forgotten diagnosis and to prevent over investigation of this benign entity.