Korean J Otorhinolaryngol-Head Neck Surg.  2012 Aug;55(8):518-520. 10.3342/kjorl-hns.2012.55.8.518.

Tubular Apocrine Adenoma with Syringocystadenoma Papilliferum of the External Auditory Canal

• Kang MS
• Lim JS
• Park SY
• Eom MS

• KMID: 2277383
• DOI: http://doi.org/10.3342/kjorl-hns.2012.55.8.518

Abstract

Tumors that develop from external auditory canal (EAC) are very rare. Adenoma that originates from apocrine is also a rare entity found in the EAC. Nevus sebaceous, syringocystadenoma papilliferum (SCAP), tubular apocrine adenoma (TAA), and fibroadenoma are known to originate from apocrine. Among them, SCAP is believed to be a benign tumor that is manifested as papule and plague on the scalp and the face. However, TAA is a rare intradermal eccrine tumor and it mostly manifests as an isolated single nodule within the scalp area. Generally, these tumors are considered as two separate entities. Many articles have reported on the prevalence of TAA or SCAP with nevus sebaceous on the body, extremities, and scalp; but only 2 articles were reported on tumors that developed from EAC. In this article, we report on a patient who presented a mass in EAC, with both SCAP and TAA pathohistologic finding without nevus sebaceous.

Keyword

Adenoma; Apocrine gland; External auditory canal

MeSH Terms

Adenoma
Aminocaproic Acids
Apocrine Glands
Ear Canal
Extremities
Fibroadenoma
Humans
Nevus
Plague
Prevalence
Scalp
Aminocaproic Acids