Date therapy initiated/Systemic/Surgery Sequence--Breast: How are these fields coded when a patient has chemotherapy after a sentinel lymph node biopsy and has a lumpectomy after completing chemotherapy? See Discussion.
Multiple Primaries--Breast: How many primaries should be reported when a lobular carcinoma with positive margins is followed 8 years later by a lobular carcinoma near the previous lumpectomy site? See Discussion.
Multiple Primaries--Lymphoma: How many primaries should be reported when a left tonsil biopsy is diagnosed with marginal zone lymphoma (9699) and a cervical lymph node biopsy is diagnosed with marginal zone lymphoma and grade 3 follicular lymphoma (9699 and 9698)?
MP/H Rules/HistologyCorpus Uteri: How should histology be coded for a "carcinosarcoma with high grade sarcomatous component within a polyp, with greater component of endometrioid carcinoma and foci papillary serous carcinoma within polyp"?
Date of Multiple Tumors--Breast: How is this field coded when a second breast tumor is found at mastectomy two months after the original breast cancer was diagnosed, but during initial workup and treatment? See Discussion.
P/H Rules/Multiple Primaries--Lung/Breast: Can we assume that a current tissue specimen is a recurrence of previous primary if a pathologist states that he has compared the current specimen with the slides from the prior tumor and concludes that the current tumor is "similar" to a previous tumor? See Discussion.
Surgery of Primary Site--Lymphoma/Soft Tissue: How is this field coded for an excision of a neck mass that found lymphoma in soft tissue (C49.0)? See Discussion.
CS Lymph Nodes/CS Site Specific Factor--Melanoma: When CS Lymph Nodes is coded 13, 14 or 15 (codes used when satellite nodule(s) or in-transit metastases are present), why must CS SSF 3 be coded 000 (No lymph node metastasis)? See Discussion.
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