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Congenital smooth muscle hamartoma, with or without hemihypertrophy(CSMH)

MedGen UID:
1847218
Concept ID:
C5882676
Congenital Abnormality
Synonym: CSMH
 
Gene (location): ACTB (7p22.1)
 
Monarch Initiative: MONDO:0957564
OMIM®: 620470

Definition

Congenital smooth muscle hamartoma (CSMH) is a benign skin lesion that presents as an indurated, slightly pigmented or flesh-colored plaque with perifollicular papules or coarse hair. Histopathologically, there is excessive proliferation of ectopic smooth muscle within the dermis. Rarely, CSMH is associated with hemihypertrophy (Atzmony et al., 2020). [from OMIM]

Clinical features

From HPO
Hamartoma
MedGen UID:
6713
Concept ID:
C0018552
Neoplastic Process
A disordered proliferation of mature tissues that is native to the site of origin, e.g., exostoses, nevi and soft tissue hamartomas. Although most hamartomas are benign, some histologic subtypes, e.g., neuromuscular hamartoma, may proliferate aggressively such as mesenchymal cystic hamartoma, Sclerosing epithelial hamartoma, Sclerosing metanephric hamartoma.
Hemihypertrophy
MedGen UID:
90701
Concept ID:
C0332890
Congenital Abnormality
Overgrowth of only one side of the body.
Hypertrichosis
MedGen UID:
43787
Concept ID:
C0020555
Disease or Syndrome
Hypertrichosis is increased hair growth that is abnormal in quantity or location.

Professional guidelines

PubMed

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Pediatr Surg Int 2017 Apr;33(4):461-469. Epub 2017 Jan 4 doi: 10.1007/s00383-016-4047-2. PMID: 28054101

Recent clinical studies

Etiology

MacFarland SP, Mostoufi-Moab S, Zelley K, Mattei PA, States LJ, Bhatti TR, Duffy KA, Brodeur GM, Kalish JM
Pediatr Blood Cancer 2017 Aug;64(8) Epub 2017 Jan 9 doi: 10.1002/pbc.26432. PMID: 28066990Free PMC Article
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Diagnosis

MacFarland SP, Mostoufi-Moab S, Zelley K, Mattei PA, States LJ, Bhatti TR, Duffy KA, Brodeur GM, Kalish JM
Pediatr Blood Cancer 2017 Aug;64(8) Epub 2017 Jan 9 doi: 10.1002/pbc.26432. PMID: 28066990Free PMC Article
Hagen SL, Hook KP
Semin Cutan Med Surg 2016 Sep;35(3):161-9. doi: 10.12788/j.sder.2016.049. PMID: 27607325
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Therapy

Wick MR
Semin Diagn Pathol 2019 Jan;36(1):2-10. Epub 2018 Nov 16 doi: 10.1053/j.semdp.2018.11.002. PMID: 30473462
Venot Q, Blanc T, Rabia SH, Berteloot L, Ladraa S, Duong JP, Blanc E, Johnson SC, Hoguin C, Boccara O, Sarnacki S, Boddaert N, Pannier S, Martinez F, Magassa S, Yamaguchi J, Knebelmann B, Merville P, Grenier N, Joly D, Cormier-Daire V, Michot C, Bole-Feysot C, Picard A, Soupre V, Lyonnet S, Sadoine J, Slimani L, Chaussain C, Laroche-Raynaud C, Guibaud L, Broissand C, Amiel J, Legendre C, Terzi F, Canaud G
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Prognosis

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Clinical prediction guides

Radley JA, Connolly M, Sabir A, Kanani F, Carley H, Jones RL, Hyder Z, Gompertz L, Reardon W, Richardson R, McClelland L, Maher ER
Clin Genet 2021 Sep;100(3):292-297. Epub 2021 Jun 6 doi: 10.1111/cge.13997. PMID: 33993487
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Recent systematic reviews

Munhoz L, Arita ES, Nishimura DA, Watanabe PCA
Oral Radiol 2021 Jan;37(1):2-12. Epub 2019 Nov 16 doi: 10.1007/s11282-019-00416-y. PMID: 31734933
Han Q, Li K, Dong K, Xiao X, Yao W, Liu G
J Pediatr Surg 2018 Dec;53(12):2465-2469. Epub 2018 Sep 1 doi: 10.1016/j.jpedsurg.2018.08.022. PMID: 30274708
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