Tumor Size--Esophagus: Can information from the endoscopy procedure that implies a size of 3 cm for Tumor Size--Clinical be used for Esophagus? See Discussion.
Histology--Corpus uteri: Is 8020/3 used for a predominantly dedifferentiated carcinoma with focal well-differentiated endometrioid adenocarcinoma diagnosed in 2018? See Discussion.
Solid Tumor Rules/Multiple primaries--Brain and CNS: What M rule applies to a clinically diagnosed right-sided parietal meningioma undergoing active surveillance, followed by a left-sided frontal anaplastic oligodendroglioma? See Discussion.
Solid Tumor Rules/Histology--Head & Neck: What is the histology code of an external ear lesion when the dermatopathology report is the only available information (follow-up with the physician or pathologist is not possible) and the final diagnosis is malignant spindle cell neoplasm, most consistent with atypical fibroxanthoma? See Discussion.
Solid Tumor Rules (2018)/Multiple primaries--Breast: How many primaries are there and how is histology coded for a breast primary showing encapsulated papillary carcinoma and Paget disease of the nipple? See Discussion.
Solid Tumor Rules (2018)/Multiple primaries--Lung: How many primaries are there and what M rules apply for multiple lung histologies in the left lower lobe (LLL) and right upper lobe (RUL) of the lungs? See Discussion.
Solid Tumor Rules (2018)/Multiple primaries--Colon: Is a colorectal anastomotic site recurrence reportable, that is, a second primary, per Rule M7, third bullet, if there is no mention of mucosa but the tumor is seen on colonoscopy? See Discussion.
Reportability/Histology--Thymus: Is a thymoma a malignancy if described as having separate tumor nodules within peri-thymic adipose tissue? See Discussion.
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