Neoplasms, Multiple Primary |
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| Multiple Primary Neoplasms; Multiple Primary Neoplasms, Synchronous; Synchronous Multiple Primary Neoplasms; Synchronous Neoplasms; Multiple Primary Neoplasm; Neoplasm, Multiple Primary; Neoplasm, Synchronous; Primary Neoplasm, Multiple | |
| Two or more abnormal growths of tissue occurring simultaneously. The neoplasms are histologically different and may be found in the same or different sites. | |