Carcinoma of rectum | Carcinoma rectum | Carcinoma rectum stage unspecified | Malignant neoplasm of rectum | Malignant neoplasm of rectum stage unspecified | Rectal cancer | Rectal cancer NOS | Rectal carcinoma | Rectal carcinoma stage unspecified | Scirrhous carcinoma of the rectum stage unspecified | Squamous cell carcinoma of rectum | HPV positive rectal squamous cell carcinoma | Rectal Neoplasms | Neoplasm, Rectal | Rectal Neoplasm | Rectum Neoplasms | Neoplasm, Rectum | Rectum Neoplasm | Rectal Tumors | Rectal Tumor | Tumor, Rectal | Neoplasms, Rectal | Cancer of Rectum | Rectum Cancers | Rectal Cancer | Cancer, Rectal | Rectal Cancers | Rectum Cancer | Cancer, Rectum | Cancer of the Rectum |