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Comparison of Melanoma Subtypes among Korean Patients by Morphologic Features and Ultraviolet Exposure

 Hong Sun Jang  ;  Jee Hung Kim  ;  Kyu Hyun Park  ;  Jae Seok Lee  ;  Jung Min Bae  ;  Byung Ho Oh  ;  Sun Young Rha  ;  Mi Ryung Roh  ;  Kee Yang Chung 
 ANNALS OF DERMATOLOGY, Vol.26(4) : 485-490, 2014 
Journal Title
Issue Date
Korean ; Melanoma ; Morphologic feature ; Ultraviolet irradiation
BACKGROUND: Genetic alterations have been identified in melanomas according to different levels of sun exposure. Whereas the conventional morphology-based classification provides a clue for tumor growth and prognosis, the new classification by genetic alterations offers a basis for targeted therapy. OBJECTIVE: The purpose of this study is to demonstrate the biological behavior of melanoma subtypes and compare the two classifications in the Korean population. METHODS: A retrospective chart review was performed on patients found to have malignant melanoma in Severance Hospital from 2005 to 2012. Age, sex, location of the tumor, histologic subtype, tumor depth, ulceration, lymph node invasion, visceral organ metastasis, and overall survival were evaluated. RESULTS: Of the 206 cases, the most common type was acral melanoma (n=94, 45.6%), followed by nonchronic sun damage-induced melanoma (n=43, 20.9%), and mucosal melanoma (n=40, 19.4%). Twenty-one patients (10.2%) had the chronic sun-damaged type, whereas eight patients (3.9%) had tumors of unknown primary origin. Lentigo maligna melanoma was newly classified as the chronic sun-damaged type, and acral lentiginous melanoma as the acral type. More than half of the superficial spreading melanomas were newly grouped as nonchronic sun-damaged melanomas, whereas nodular melanoma was rather evenly distributed. CONCLUSION: The distribution of melanomas was largely similar in both the morphology-based and sun exposure-based classifications, and in both classifications, mucosal melanoma had the worst 5-year survival owing to its tumor thickness and advanced stage at the time of diagnosis.
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1. College of Medicine (의과대학) > Dept. of Dermatology (피부과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Jee Hung(김지형) ORCID logo https://orcid.org/0000-0002-9044-8540
Roh, Mi Ryung(노미령) ORCID logo https://orcid.org/0000-0002-6285-2490
Rha, Sun Young(라선영) ORCID logo https://orcid.org/0000-0002-2512-4531
Bae, Jung Min(배정민)
Oh, Byung Ho(오병호) ORCID logo https://orcid.org/0000-0001-9575-5665
Lee, Jae Souk(이재석)
Chung, Kee Yang(정기양) ORCID logo https://orcid.org/0000-0003-3257-0297
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