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Smooth muscle hamartoma in Child
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Smooth muscle hamartoma in Child

Contributors: Craig N. Burkhart MD, Belinda Tan MD, PhD, Dean Morrell MD
Other Resources UpToDate PubMed

Synopsis

Congenital smooth muscle hamartomas develop during fetal life and are characterized by localized proliferations of smooth muscle bundles in the dermis with overlying vellus hairs. Congenital smooth muscle hamartomas may be noticed at birth or during early infancy. There are no systemic symptoms. The estimated prevalence is 1 in 2600 births with a slight male predominance.

Smooth muscle hamartomas are benign and, thus, the prognosis is excellent. Pigmentation and hair tend to become less noticeable with age.

Codes

ICD10CM:
Q85.9 – Phakomatosis, unspecified

SNOMEDCT:
239145008 – Diffuse smooth muscle hamartoma

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Last Updated:10/02/2018
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Smooth muscle hamartoma in Child
Smooth muscle hamartoma : Asymmetric trunk or extremity distribution, Buttocks, Smooth plaque, Thigh, Trunk, Upper arm
Clinical image of Smooth muscle hamartoma
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