Clinical and histopathological characteristics and survival analysis of 4594 Japanese patients with melanoma
Year: 2019
Type: article
Study design: Observational Study
Abstract: BACKGROUND: The incidence of melanoma among those of an Asian ethnicity is lower than in Caucasians; few large-scale Asian studies that include follow-up data have been reported. OBJECTIVES: To investigate the clinical characteristics of Japanese patients with melanoma and to evaluate the prognostic factors. METHODS: Detailed patient information was collected from the database of Japanese Melanoma Study Group of the Japanese Skin Cancer Society. The American Joint Committee on Cancer seventh Edition system was used for TNM classification. The Kaplan-Meier method and Cox proportional hazards model were used to estimate the impact of clinical and histological parameters on disease-specific survival in patients with invasive melanoma. RESULTS: In total, 4594 patients were included in this analysis. The most common clinical type was acral lentiginous melanoma (40.4%) followed by superficial spreading melanoma (20.5%), nodular melanoma (10.0%), mucosal melanoma (9.5%), and lentigo maligna melanoma (8.1%). The 5-year disease-specific survival for each stage was as follows: IA = 98.0%, IB = 93.9%, IIA = 94.8%, IIB = 82.4%, IIC = 71.8%, IIIA = 75.0%, IIIB = 61.3%, IIIC = 41.7%, and IV = 17.7%. Although multivariate analysis showed that clinical classifications were not associated with survival across all stages, acral type was an independent poor prognostic factor in stage IIIA. CONCLUSIONS: Our study revealed the characteristics of melanoma in the Japanese population. The 5-year disease-specific survival of each stage showed a similar trend to that of Caucasians. While clinical classification was not associated with survival in any stages, acral type was associated with poor survival in stage IIIA. Our result might indicate the aggressiveness of acral type in certain populations.
Source: Cancer Medicine
DOI: 10.1002/cam4.2110
Authors: Yasuhiro Fujisawa, Shusuke Yoshikawa, Akane Minagawa, Tatsuya Takenouchi, Kenji Yokota, Hiroshi Uchi, Naoki Noma, Yasuhiro Nakamura, Jun Asai, Junji Kato, Susumu Fujiwara, Satoshi Fukushima, Jiro Uehara, Toshihiko Hoashi, Tatsuya Kaji, Taku Fujimura, Kenjiro Namikawa, Manabu Yoshioka, Naoki Murao, Dai Ogata, Kanako Matsuyama, Naohito Hatta, Yoshitsugu Shibayama, Toshiharu Fujiyama, Masashi Ishikawa, Daisuke Yamada, Akiko Kishi, Yoshiyuki Nakamura, Takatoshi Shimiauchi, Kazuyasu Fujii, Manabu Fujimoto, Hironobu Ihn, Norito Katoh
Institutions: University of Tsukuba, Shizuoka Cancer Center, Shinshu University, Shinshu University Hospital, Niigata Cancer Center Hospital, Nagoya University, Kyushu University, Osaka City University, Saitama International Medical Center, Saitama Medical University, Kyoto Prefectural University of Medicine, Sapporo Medical University, Kobe University, Kumamoto University, Asahikawa Medical University, Asahikawa University, Nippon Medical School, Okayama University, Tohoku University, National Cancer Center Hospital, University of Occupational and Environmental Health Japan, Hokkaido University, Gifu University, Toyama Prefectural Central Hospital, Fukuoka University, Hamamatsu University School of Medicine, Saitama Cancer Center, The University of Tokyo, Toranomon Hospital, Kagoshima University
Language: English
Subfield: Oncology
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,750
OpenAlex ID: W2933878484