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Musculoskeletal » Neck / Head
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Author(s) :
Shlomo Gobi
Presentation A child presented with congenital torticollis.
Caption: Sagittal view of the right side of the neck
Description: A well-defined fusiform shaped mass is seen within the right sternocleidomastoid muscle. The mass like structure is of the same echogenicity as the muscle and appears to taper into the muscle fibers.
Caption: Comparative views of both the right and the left sternocleidomastoid muscle
Description: The normal left sternocleidomastoid muscle is visualized as labeled. On the left side of the image, the mass like structure in the right sternomastoid muscle consistent with the clinical diagnosis of muscular torticollis is visualized. SCM = locates spindle shaped thickening of the muscle. JV=jugular vein and CCA= common carotid artery.
Differential Diagnosis Congenital muscular torticollis
Final Diagnosis Congenital muscular torticollis
Discussion Additional information from the editors.

The diagnosis "Congenital Muscular Totricollis" if often used interchangeably with Fibromatosis colli.  However, the two are slightly different in meaning.  Torticollis describes the condition, and the addition of "Congenital" narrows the scope but is still not specific as to the cause.  Firomatosis colli is specific as to the observable lesion - a benign proliferation of fibrous tissue in the sternocleidomastoid muscle.

The two terms are more fully described in Wikipedia

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