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  • Title: Metastatic tumors to the parotid and submandibular glands--analysis and differential diagnosis of 108 cases.
    Author: Seifert G, Hennings K, Caselitz J.
    Journal: Pathol Res Pract; 1986 Dec; 181(6):684-92. PubMed ID: 3562340.
    Abstract:
    The distinction between primary salivary gland tumors and metastases of other primary tumors in salivary glands is of special importance for therapy and prognosis. In the files of the Salivary Gland Register, 10,944 cases were collected during 1965 and 1985. Among these cases, there were 108 cases of metastatic tumors to the parotid and submandibular gland. The pathohistological analysis of these tumors revealed the following data: 47 cases (43%) of metastatic tumors were localized in the parenchyma of the parotid gland (37 cases) or of the submandibular gland (10 cases). 61 cases (57%) displayed metastases in the lymph nodes of the parotid gland (38 cases) or of the submandibular gland (23 cases). The sublingual gland was free of metastatic tumors. 65 metastatic tumors originated from primary tumors in the neighborhood (head and neck). 32 tumors were carcinomas of the skin, 17 tumors were melanomas, and 13 tumors were nasopharyngeal cancers. Metastases of thyroid cancers were found in 3 cases. The relative frequency of metastases in the lymph nodes of the salivary glands is due to the intense drainage with lymph vessels and the presence of many lymph nodes which are localized especially in the gland parenchyma or around the parotid gland. 21 metastatic tumors originated from primary tumors distant from the head and neck region. There were metastases of lung cancers (7 cases), renal cancers (6 cases), mammary cancers (6 cases), colonic cancer (1 case) and uterus cancer (1 case). Clear cell carcinomas in salivary gland tissue should always be checked for a metastasis of a primary renal cancer.(ABSTRACT TRUNCATED AT 250 WORDS)
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