| Anatomic location directly invaded by primary malignant neoplasm of anus (observable entity) | | Anatomic location directly invaded by primary malignant neoplasm of anus | | Tissue structure invaded by direct extension of primary malignant neoplasm of anus
Site involved by direct extension of primary malignant neoplasm of anus
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| | Id | 1155790000 | | Status | Defined |
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