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Kusafuka K, Sato Y, Nakatani E, Baba S, Maeda M, Yamanegi K, Ueda K, Inagaki H, Otsuki Y, Kuroda N, Suzuki K, Iwai H, Imamura Y, Itakura J, Yamanaka S, Takahashi H, Ito I, Akashi T, Daa T, Hamada M, Yasuda M, Kawata R, Yamamoto H, Tachibana Y, Fukuoka J, Muramatsu A, Arai K, Suzuki M. The implicated clinical factors for outcomes in 304 patients with salivary duct carcinoma: Multi-institutional retrospective analysis in Japan. Head Neck 2022; 44:1430-1441. [PMID: 35352425 PMCID: PMC9311811 DOI: 10.1002/hed.27034] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 12/18/2021] [Accepted: 03/11/2022] [Indexed: 12/04/2022] Open
Abstract
Background Salivary duct carcinoma (SDC) is a high‐grade salivary malignancy that frequently occurs as the carcinomatous component of carcinoma ex pleomorphic adenoma. We herein examined the clinical factors affecting outcomes in a large cohort of SDC. Methods We selected 304 SDC cases and investigated clinical characteristics and the factors affecting outcomes. Results The median age of the cases examined was 68 years, the most common primary site was the parotid gland (238 cases), and there was a male predominance (M/F = 5:1). Outcomes were significantly worse when the primary tumor site was the minor salivary glands (SG) than when it was the major SG. Outcomes were also significantly worse in pN(+) cases (161 cases) than in pN0 cases, particularly those with a metastatic lymph node number ≥11. The cumulative incidence of relapse and distant metastases was significantly higher in stage IV cases than in stage 0–III cases. Conclusions The absolute number of lymph node metastases, higher stages, and the minor SG as the primary tumor site were identified as factors affecting the outcome of SDC.
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Affiliation(s)
| | - Yoko Sato
- Division of Clinical Biostatistics, Research Support Center, Shizuoka General Hospital, Shizuoka, Japan
| | - Eiji Nakatani
- Division of Clinical Biostatistics, Research Support Center, Shizuoka General Hospital, Shizuoka, Japan
| | - Satoshi Baba
- Department of Diagnostic Pathology, Hamamatsu University School of Medicine Hospital, Shizuoka, Japan
| | - Matsuyoshi Maeda
- Department of Clinical Pathology, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - Koji Yamanegi
- Department of Pathology, Hyogo Medical College, Hyogo, Japan
| | - Kaori Ueda
- Department of Pathology and Molecular Diagnostics, Nagoya City University, Nagoya, Japan
| | - Hiroshi Inagaki
- Department of Pathology and Molecular Diagnostics, Nagoya City University, Nagoya, Japan
| | - Yoshiro Otsuki
- Department of Pathology, Seirei Hamamatsu General Hospital, Shizuoka, Japan
| | - Naoto Kuroda
- Department of Diagnostic Pathology, Kobe Koudou Hospital Center, Kobe, Japan
| | - Kensuke Suzuki
- Department of Otolaryngology - Head and Neck Surgery, Kansai Medical University, Osaka, Japan
| | - Hiroshi Iwai
- Department of Otolaryngology - Head and Neck Surgery, Kansai Medical University, Osaka, Japan
| | - Yoshiaki Imamura
- Division of Diagnostic Pathology/Surgical Pathology, University of Fukui Hospital, Fukui, Japan
| | - Junya Itakura
- Department of Anatomic Pathology, Kurashiki Central Hospital, Okayama, Japan
| | - Shoji Yamanaka
- Department of Diagnostic Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hideaki Takahashi
- Department of Otorhinolaryngology - Head and Neck Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Ichiro Ito
- Department of Diagnostic Pathology, Nagano Red Cross Hospital, Nagano, Japan
| | - Takumi Akashi
- Division of Surgical Pathology, Tokyo Medical and Dental University Hospital, Tokyo, Japan
| | - Tsutomu Daa
- Department of Diagnostic Pathology, Oita University, Oita, Japan
| | - Mei Hamada
- Department of Diagnostic Pathology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Masanori Yasuda
- Department of Diagnostic Pathology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Ryo Kawata
- Department of Otorhinolaryngology - Head and Neck Surgery, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | | | - Yuri Tachibana
- Department of Pathology, Nagasaki University, Nagasaki, Japan
| | - Junya Fukuoka
- Department of Pathology, Nagasaki University, Nagasaki, Japan
| | - Aya Muramatsu
- Department of Pathology, Shizuoka General Hospital, Shizuoka, Japan
| | - Kazumori Arai
- Department of Pathology, Shizuoka General Hospital, Shizuoka, Japan
| | - Makoto Suzuki
- Department of Pathology, Shizuoka General Hospital, Shizuoka, Japan
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