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Pilar sheath acanthoma

MedGen UID:
83398
•Concept ID:
C0346005
•
Neoplastic Process
Synonyms: Acanthoma, Pilar Sheath; Acanthomas, Pilar Sheath; Pilar Sheath Acanthoma; Pilar Sheath Acanthomas
SNOMED CT: Pilar sheath acanthoma (254693008); Pilar sheath acanthoma (1295378006)
 
Monarch Initiative: MONDO:0006907

Definition

A benign, small, papular or nodular skin neoplasm that usually arises above the upper lip. It is characterized by an epithelial proliferation with a central cavity. The cavity wall is lined with keratinocytes. [from NCI]

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVPilar sheath acanthoma

Professional guidelines

PubMed

Comparative study of treatment methods for benign lichenoid keratosis of the face.
Yoon JH, Baek EJ, Park EJ, Kim KH
Dermatol Ther 2022 May;35(5):e15419. Epub 2022 Mar 12 doi: 10.1111/dth.15419. PMID: 35246904
Lesions With an Epidermal Hyperplastic Pattern: Morphologic Clues in the Differential Diagnosis.
Fernandez-Flores A
Am J Dermatopathol 2016 Jan;38(1):1-16; quiz 17-9. doi: 10.1097/DAD.0000000000000324. PMID: 26730692
Expression of lumican in hidroacanthoma simplex and clonal-type seborrheic keratosis as a potent differential diagnostic marker.
Takayama R, Ansai S, Ishiwata T, Yamamoto T, Matsuda Y, Naito Z, Kawana S
Am J Dermatopathol 2014 Aug;36(8):655-60. doi: 10.1097/DAD.0b013e31828b6bbf. PMID: 23656908

Recent clinical studies

Etiology

Benign follicular tumors.
Tellechea O, Cardoso JC, Reis JP, Ramos L, Gameiro AR, Coutinho I, Baptista AP
An Bras Dermatol 2015 Nov-Dec;90(6):780-96; quiz 797-8. doi: 10.1590/abd1806-4841.20154114. PMID: 26734858Free PMC Article

Diagnosis

An unusual case of pilar sheath acanthoma colliding with sebaceous hyperplasia.
Zocchi L, Zenone M, Quaglino P, Senetta R, Torres-Navarro I, Broganelli P, Ribero S
Ital J Dermatol Venerol 2022 Aug;157(4):369-370. Epub 2021 May 28 doi: 10.23736/S2784-8671.21.07032-8. PMID: 34044515
Benign follicular tumors.
Tellechea O, Cardoso JC, Reis JP, Ramos L, Gameiro AR, Coutinho I, Baptista AP
An Bras Dermatol 2015 Nov-Dec;90(6):780-96; quiz 797-8. doi: 10.1590/abd1806-4841.20154114. PMID: 26734858Free PMC Article
Pilar sheath acanthoma--report of a case with review of the literature.
Choi YS, Park SH, Bang D
Yonsei Med J 1989 Dec;30(4):392-5. doi: 10.3349/ymj.1989.30.4.392. PMID: 2697113
Sebaceous trichofolliculoma.
Plewig G
J Cutan Pathol 1980 Dec;7(6):394-403. doi: 10.1111/j.1600-0560.1980.tb01213.x. PMID: 7451702

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