Fibromatosis Colli: Symptoms, Causes, Diagnosis and Treatment

Written by Medicover Team and Medically Reviewed by Dr Kapil Babasaheb Jadhav , Pediatricians

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Fibromatosis colli is a rare benign condition in infants characterized by thickening of the sternocleidomastoid muscle, usually caused by birth-related muscle injury. It often presents as a firm neck lump and may lead to torticollis or limited neck movement. Early diagnosis and appropriate treatment, including physical therapy, help restore neck function and prevent long-term complications.

What are the Types of Fibromatosis Colli?

Fibromatosis Colli can present in various types or forms, each characterized by distinct clinical features and diagnostic criteria.

Infantile Fibromatosis Colli: A rare condition causing a firm mass in a baby's neck that typically resolves on its own.
Adult Fibromatosis Colli: Characterized by a slowgrowing benign tumor in the neck of adults.
Fibromatosis Colli with Torticollis: Involves a combination of neck mass and neck muscle tightness, leading to limited neck movement.
Congenital Fibromatosis Colli: Presents at birth as a thickened or swollen muscle in the neck, usually improving with time without treatment.
Fibromatosis Colli Associated with Trauma: Occurs due to injury or trauma to the neck, leading to the development of fibrous tissue in the affected area.

What are the Symptoms of Fibromatosis Colli?

Fibromatosis Colli typically presents with specific symptoms related to the affected area.

Swelling or lump in the neck
Limited neck movement
Discomfort or pain in the neck
Tenderness in the affected area
Difficulty turning the head fully
Preference for looking in one direction
Asymmetry of the head or face if untreated (positional plagiocephaly)
Fussiness or irritability, especially when the neck is moved
Feeding difficulties in some infants due to neck stiffness

What are the Causes of Fibromatosis Colli?

Fibromatosis Colli is a benign condition in infants caused by fibrous tissue formation within the sternocleidomastoid muscle, often related to birth-related factors.

Birth trauma or difficult delivery (e.g., use of forceps or prolonged labor)
Intrauterine positioning leading to pressure on the neck muscles
Reduced blood supply (ischemia) to the sternocleidomastoid muscle
Muscle injury or microtears during childbirth
Unknown or idiopathic causes in some cases
Possible genetic predisposition (rare and not well established)

This version improves clarity while aligning better with commonly accepted causes. Let me know if you want a diagnosis or treatment section to match this.

When to See a Doctor for Fibromatosis Colli?

Parents should consult a Pediatrician if they notice persistent neck swelling or restricted head movement in their baby. Early evaluation ensures proper diagnosis and helps prevent long-term complications like torticollis or delayed motor development.

You should see a doctor if you have:

A noticeable lump in the baby's neck
Limited head movement or stiffness
Difficulty in feeding or positioning

Get medical help immediately if:

Rapid increase in swelling size
Severe pain or persistent crying
Signs of infection like redness or fever

These could be signs of a serious complication like a Fibromatosis Colli, which needs urgent care.

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How Is Fibromatosis Colli Diagnosed?

Fibromatosis colli is typically diagnosed through a combination of physical examinations and imaging tests.

Physical Examination: Identification of a firm, non-tender mass in the sternocleidomastoid muscle along with restricted neck movement or head tilt.
Medical History: Assessment of birth history, including prolonged labor, breech position, or use of delivery instruments.
Ultrasound Imaging: First-line and most preferred test, showing localized enlargement of the sternocleidomastoid muscle.
Observation of Symptoms: Presence of torticollis (head tilt) and limited range of motion.
Differential Diagnosis: Helps rule out other neck masses such as lymph nodes, cysts, or tumors.
MRI or CT scan: Used in rare or unclear cases for further evaluation.
Biopsy (Rarely Needed): Considered only when the diagnosis is uncertain or to exclude other conditions.

Early diagnosis ensures timely management and helps prevent long-term complications like persistent neck deformity.

What are the Treatment for Fibromatosis Colli?

Fibromatosis Colli is typically managed through conservative treatments aimed at relieving symptoms and improving neck mobility.

Physical Therapy: Involves targeted exercises to improve neck muscle strength and flexibility, helping to reduce pain and improve range of motion in Fibromatosis Colli patients.
Heat Therapy: Applying heat packs or warm compresses to the affected area can help relax muscles, alleviate pain, and improve blood circulation in Fibromatosis Colli.
Medication: Nonsteroidal antiinflammatory drugs (NSAIDs) or muscle relaxants may be prescribed to manage pain and discomfort associated with Fibromatosis Colli.
Steroid Injections: In some cases, corticosteroid injections directly into the affected muscle may help reduce inflammation and alleviate symptoms of Fibromatosis Colli.
Surgery: Rarely needed, surgical intervention may be considered for Fibromatosis Colli if conservative treatments fail to provide relief, aiming to remove the fibrous tissue causing symptoms.

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What are the Risk Factors of Fibromatosis Colli?

Fibromatosis Colli, a condition primarily affecting infants, is associated with risk factors such as difficult labor, birth trauma, and large birth weight babies.