Journal of Clinical & Experimental Pathology
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Salivary duct carcinoma (SDC) is an uncommon neoplasm that most commonly occurs in major salivary glands, mainly
the parotid gland. SDC is rarely found in the minor salivary glands of the oral cavity. Here we report an extremely rare
case of sarcomatoid SDC originating in a minor salivary gland of the palate. The tumor was histologically characterized by the
presence of both carcinomatous and sarcomatoid components. The patient presented with a painless mass in the right palate,
which slowly increased in size over 20 years. The clinical course of the present case suggests that the tumor most probably
developed as a result of malignant transformation of a preexisting benign tumor of the palatal salivary gland. We herein
describe the clinical and histological features of this extremely rare case of sarcomatoid SDC with reference to the relevant
Tomihara received his Ph.D. degree in 2006 from Sapporo Medical University, working on immunegene therapy by adenovirus vector. He then moved to Cancer
Therapy and Research Center (CTRC) at The University of Texas Health Science Center at San Antonio (UTHSCSA) to work with Dr. Shin as a post-doctoral
fellow. He obtained an Assistant Professor position in 2013 in the Department of Oral and Maxillofacial Surgery Graduate School of Medicine and Pharmaceutical
Sciences for Research, University of Toyama, where he started independent research on cancer immunology.
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