Introduction:

Fibromatosis Colli is a benign congenital fibrous tumor, which develops in the sternocleidomastoid muscle. Its clinical manifestations encompass neck swelling and torticollis (restriction of neck movements).

Objective:

The aim of this report is to describe the fundamental diagnostic and therapeutic aspects of Fibromatosis Colli or Congenital Muscular Torticollis.

Clinical Case:

A case of a 21-day-old female neonate is presented, with the presence of a right cervical mass (1.5*2 cm) and the head tilted to the right without other associated symptoms found in the physical examination. A relevant antecedent is breech presentation during the birth. The diagnosis is obtained through ultrasonography and contrasted neck tomography.

Conclusions:

Fibromatosis Colli is a pathology that could be unnoticed in the postpartum examination of the newborn. It is important that medical personnel identify it in order to avoid future complications, such as craniofacial asymmetry, cervical and thoracic scoliosis, or important ocular alterations.

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