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  • Title: [Morphological observations of tumors in the cardiac conduction system].
    Author: Song Y, Yao Q, Luo B.
    Journal: Zhonghua Bing Li Xue Za Zhi; 1998 Feb; 27(1):10-2. PubMed ID: 11244933.
    Abstract:
    OBJECTIVE: To investigate the incidence of tumors in the cardiac conduction system (CCS) and to study their relation to sudden deaths. METHODS: The CCS from 149 cases of sudden death without extracardiac cause of deaths and those from 737 cases of non-cardiac death were sampled using technique designed by the authors. Routine histological examinations were carried out. RESULTS: Tumors in the CCS were found in 12 cases (1.35%). Another case with tumor in the CCS was found in a specimen received for consultation. Of these 13 tumors, 10 were primary benign tumors affecting the CCS, 3 were metastatic tumors. The benign tumors included fibroma, hemangioma, lipomatous hypertrophy of the atrial septum, mesothelioma and rhabdomyoma. 8 of the 10 cases were located in the SAN or AVN. All the metastatic tumors were in the SAN. Of the 13 cases, 3 died suddenly. CONCLUSION: Tumors in the CCS are the smallest tumors which can cause sudden death.
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