A 1-month-old girl is brought to the physician because her mother has noticed that the girl's head is always tilted to the right. She appears healthy. She is at 60th percentile for length and weight. Examination shows the head tilted toward the right, and the chin rotated towards the left. Range of motion of the neck is limited. There is a palpable, firm, well-circumscribed mass in the right lower side of the neck. The remainder of the examination shows no abnormalities. Which of the following conditions was most likely present prenatally?

Question

Quizplus · Accepted Answer

Eductional Objective: Congenital torticollis typically manifests with a tilted head toward the affected side, rotation of the chin towards the opposite side, and a limited range of motion of the neck. A palpable, well-circumscribed mass within the sternocleidomastoid muscle (SCM) due to fibrosis is also common. It is most commonly the result of malposition of the head in utero or birth trauma.  Most cases resolve with conservative therapy and stretching exercises.

A 1-Month-Old Girl Is Brought to the Physician Because Her