Cytodiagnosis of fibromatosis colli

Sterocleidomastoid tumor of infancy (SCMI), also known as fibromatosis colli of infancy, is a benign, self limiting disease of new born characterised by its classical history and clinical presentation of firm to hard fusiform mass in the lower and middle portion of sternocleidomastoid. SCMI often appears during early perinatal period between second to fourth weeks of life. A well recognized association between SCMI and primiparous birth, breech presentation, prolonged difficult labor and forceps deliveries is found. Cytology shows spindle shaped mature fibroblastic cells scattered singly along with degenerated and multinucleated giant muscle cells in a clean background. It is important to differentiate this lesion from different forms of infantile fibromatosis. Fine-needle aspiration cytology (FNAC), as a time saving, rapid and reliable diagnostic procedure, has got bigger role to play in reassurance of anxious parents, guiding for conservative management and avoiding surgery.

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“…[2] Low grade fibrosarcoma/infantile fibrosarcoma rarely affects neck region and shows considerable cellularity and atypia. [27]…”

Section: Discussionmentioning

confidence: 99%

Cytodiagnosis of sternocleidomastoid tumor of infancy

Baisakh

Mishra

Narayanan

et al. 2012

J Cytol

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“…The pathogenic mechanism of SCMI is still not clear. Mechanism includes fetal malposition, birth trauma, ischemic necrosis after vascular compression during birth, infection, and the presence of endogenous factor 1–4, 6–10. A birth trauma theory postulates about difficult labor and delivery which cause tearing of the SCM with subsequent bleeding, hematoma, fibrosis, and contracture 3, 10.…”

Section: Discussionmentioning

confidence: 99%

“…The lesion represents benign but infiltrative process with partial replacement of SCM by diffuse fibroblastic proliferation 2, 5, 7. Muscle fibers divided by the proliferating fibroblasts undergo atrophy 2, 7. The early diagnosis for this lesion is important because it needs conservative therapy 2, 4.…”

Section: Discussionmentioning

confidence: 99%

“…Sternomastoid or sternocleidomastoid tumor of infancy (SCMI) also known as fibromatosis colli is a benign fibroblastic lesion affecting the body of sternocleidomastoid muscle (SCM) 1–10. It is the most common cause of neck mass in the perinatal period with an incidence of 0.4% live births 1–3, 5.…”

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confidence: 99%

“…However, it can be anywhere along the length of the muscle 1. The right side is more commonly involved than left7 and male affected more than female 5, 6. It is usually identified during the second to fourth week of life 2–4.…”

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confidence: 99%

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Diagnosis of sternomastoid tumor of infancy by fine‐needle aspiration cytology

Kumar

Pradhan

2010

Diagnostic Cytopathology

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Sternomastoid tumor of infancy, also known as fibromatosis colli or muscular torticollis, is a benign fibroblastic lesion of the sternocleidomastoid muscle presenting as a firm, fusiform, non-tender neck mass of 1-3 cm in greatest dimension in the perinatal period. Various modalities are used for the diagnosis including radiographic studies, fine-needle aspiration cytology (FNAC), and open biopsy. We report eight cases of sternomastoid tumor of infancy diagnosed by FNAC. The objective of the study is to present the role of FNAC in the diagnosis of sternomastoid tumor with its cytomorphological features. FNA was done by using 23-guage needle and 10 ml disposable plastic syringe. The wet smears were fixed in 95% ethanol and processed for Papanicolaou stain. The dried smears were stained with May-Grünwald-Giemsa stain. The smears were studied for cytomorphologic features. The age of the patients ranged between 2 and 10 weeks. Male: Female ratio was 1.6:1. Six of eight had history of prolonged labor, two had history of breech presentation, and three had history of forceps assisted vaginal delivery. Cytologic findings included singly scattered and loose clusters of benign fibroblasts with moderate amount of unipolar to bipolar cytoplasm and plumped, ovoid nuclei. Many multinucleated giant cells consistent with atrophic muscle fibers were also seen. FNAC is a reliable, safe, and cost-effective method and can provide a rapid and reliable diagnosis of sternomastoid tumor of infancy.

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Solid Swellings of the Anterior Triangle: Sternocleidomastoid (SCM) Tumors

Sakr

2023

Lateral Neck Swellings

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Cytodiagnosis of fibromatosis colli

Cited by 8 publications

References 6 publications

Cytodiagnosis of sternocleidomastoid tumor of infancy

Cytodiagnosis of sternocleidomastoid tumor of infancy

Diagnosis of sternomastoid tumor of infancy by fine‐needle aspiration cytology

Solid Swellings of the Anterior Triangle: Sternocleidomastoid (SCM) Tumors

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