- Multiple tumors/polyps
Which ones should be counted independently and which ones are part of the same disease process? When a polyp is biopsied and the resection shows residual, plain adenocarcinoma in the same area, what histology histology code is the best to use?
- Contiguous/overlapping sites
Tumors at the rectosigmoid junction and ileocecal valve have long been a problem
- Time between diagnoses
For a patient with multiple colon polyps, is timing a factor in making the diagnosis?
- NOS versus specific histology
Pathologists have specific criteria for diagnosing certain colon malignancies that are not understood by most registrars. Clearer definitions and criteria for coding are needed for:
- Mucinous adenocarcinoma
- Neuroendocrine carcinoma
- Signet ring cell adenocarcinoma
- Undifferentiated carcinoma
- Adenocarcinoma, NOS
A very common diagnosis for colon; are there indications in the pathology report that a more specific diagnosis is warranted?
- Adenocarcinoma with mixed subtypes
Are there specific histologies that comprise this diagnosis for colon cancer?