Primary Site: How do you code the primary site when the tumor is identified in a bladder that was reconstructed using a stomach augmentation procedure and the pathology report states, "Bladder/prostate: adenocarcinoma arising within gastric mucosa, with the following features: highly infiltrative through the bladder wall"?
Primary Site--Head & Neck: What site code is used to represent the following head and neck primary where there is not a clear statement of primary site? See discussion.
Primary Site: What site code is used to classify a femur biopsy with pathologic diagnosis of "Ewing sarcoma/primitive neuroectodermal tumor (PNET)"? See discussion.
Primary Site: What code should be used to represent the site for an "extraovarian" papillary serous adenocarcinoma located in the "rectal muscle sheath"? See discussion.
Primary Site--Ovary/Peritoneum: When ovaries are not found on a resection or if the ovaries removed are negative for malignancy, but the clinician refers to the adenocarcinoma in the pelvis as being an "ovarian" primary, should the primary site be coded as ovary, pelvic peritoneum or unknown? See discussion.
Primary site--Head and Neck: How is primary site coded if a floor of mouth biopsy reveals microinvasive squamous cell carcinoma but the definitive resection of the tongue and floor of mouth unifocal lesion reveals only in situ squamous cell cancer? See Discussion.
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