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  1. A sternocleidomastoid tumor of infancy, also known as fibromatosis colli of infancy, is a rare benign mass in the muscle on the side of the neck. The tumor is usually on the right side, and is firm, measuring a couple centimeters in diameter. It appears in a newborn, usually between the second and fourth weeks of life.

    www.chop.edu/conditions-diseases/sternocleidoma…

    Fibromatosis colli (also known as sternomastoid tumor of infancy) is a benign proliferation of fibrous tissue infiltrating the lower third of the sternocleidomastoid, (SCM) and is the most common cause of neonatal torticollis.

    en.wikipedia.org/wiki/Fibromatosis_colli
    Fibromatosis colli is an unusual cause of a neck lump in infants, but the most common cause of congenital muscular torticollis. Diagnosis can be made confidently with a clinical examination and ultrasonography, allowing early parental reassurance and avoiding invasive investigations.
    www1.racgp.org.au/ajgp/2019/november/fibromato…
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    Fibromatosis colli is a rare benign disease of the lower part of the sternocleidomastoid (SCM) muscle, also known as infancy sternocleidomastoid pseudotumor. The term “tumor” is misleading as it will not be a cancerous disease but is referred to as a congenital fibrotic phase, so the word tumor means swelling in this particular sense. 1
    Fibromatosis Colli is a rare benign tumour usually presenting in infancy. It is also known as sternomastoid tumour as there is diffuse enlargement of the sternocleidomastoid muscle especially in the lower portion [ 1 ]. Its aetiology is uncertain although birth trauma is suggested as a possible cause [ 2 ].
    Using ultrasound (USG), fibromatosis colli can be accurately diagnosed, thereby excluding more suspicious swellings of the neck and face. Proper diagnosis of ultrasound may prevent inappropriate investigation and medical interventions which could be harmful. 3
    The most common presenting manifestation of fi -bromatosis colli is the presence of a fi rm, nontender, spindle-shaped nodule, usually in the distal one-third of the sternocleidomastoid muscle. Fibromatosis colli affects the right side in approximately 75% of cases;
  3. Fibromatosis Colli: A Rare Neck Tumor
    Fibromatosis colli is a rare benign tumor in the neck muscle of infants, causing head tilt or torticollis
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    Fibromatosis colli - Wikipedia

    Fibromatosis colli (FMC), also termed sternocleidomastoid tumor of infancy, pseudotumor of infancy, and infancy sternocleidomastoid pseudotumor, is an uncommon (incidence: 0.4%–1.3% of live births), congenital tumor in one of the two sternocleidomastoid neck muscles although rare cases have … See more

    FMC tumors most commonly present as slow-growing, firm, mobile, nontender, spindle-shaped masses in the lower two-thirds of the sternocleidomastoid muscle of infants within 8 weeks (average: 24 days) of delivery. At … See more

    The recommended first step after clinically detecting a sternocleidomastoid mass in a newborn infant is Doppler ultrasonography combined with duplex ultrasonography See more

    Microscopic histopathological analyses of biopsied FMC tumor tissues typically find benign-appearing, spindle-shaped fibroblasts, … See more

    It has been postulated that the FMC tumor mass itself is a remnant of a hematoma caused by tissue injury occurring during delivery. However, … See more

    Prompt diagnosis and treatment of FMS is crucial for avoiding the impairments that may follow long-term mal-positioning of infant's head such … See more

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  5. Fibromatosis colli | Radiology Reference Article

    WebAug 3, 2023 · Fibromatosis colli is a rare benign condition that affects the sternocleidomastoid muscle in infants. Learn about its epidemiology, clinical presentation, pathology, radiographic features, treatment and …

  6. Sternocleidomastoid Tumor of Infancy - Children's Hospital of …

  7. Fibromatosis Colli - A Rare Cytological Diagnosis In Infantile Neck ...

  8. Fibromatosis colli - Altmeyers Enzyklopädie - Fachbereich …

  9. The Presentation and Management of Fibromatosis Colli

  10. Fibromatosis colli or pseudotumour of sternocleidomastoid …

  11. Fibromatosis Colli | SpringerLink

  12. RACGP - Fibromatosis colli - Australian Journal of …

    WebFibromatosis colli is a benign neck mass of the sternocleidomastoid muscle in infants, often associated with torticollis. Learn about its diagnosis, complications and conservative treatment options from a case …

  13. Sternocleidomastoid Tumor of Infancy - Nicklaus Children's Hospital