M1

breast tumor, no distant metastases [TNM (tumor-node-metastasis) classification]; distant metastases [TNM (tumor-node-metastasis) classification]; distant tumor metastases [TNM (tumor-node-metastasis) classification]; leukemia with poorly differentiated myeloblasts [Franco-American-British (FAB) classification]; primary motor area

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mitral valve closure; see first heart sound, under sound.