MP/H Rules/Multiple primaries--Breast: How many primaries are to be reported if different recurrence scores are found on the Oncotype Dx studies performed for multiple tumors in the same breast if the clinician states the patient has two primaries but the pathologist does not address the issue? See Discussion.
Primary site--Heme & Lymphoid Neoplasms: How do you code primary site for a case of "leukemia cutis" when the bone marrow exam is negative for involvement with leukemia?
First course treatment/Date therapy initiated--Breast: How is the Date of Initiation of Hormone Therapy field coded when a patient undergoes "Tamoxifen blunting" to achieve better MRI imaging after a biopsy but prior to definitive surgery which is followed by adjuvant Tamoxifen therapy? See Discussion.
MP/H Rules/Multiple primaries--Sarcoma: Does a prior clinical diagnosis of a metastatic deposit for a previously diagnosed sarcoma have priority if the diagnosis on a subsequent resection (18 months later) indicates it is also a sarcoma but does not state it represents metastasis from the original sarcoma primary? See Discussion.
Multiplicity Counter/Date Multiple Tumors--Bladder: How are these fields coded when multiple tumors were present at the time of diagnosis and another tumor diagnosed a year later is determined to be the same primary? See Discussion.
Primary site: How is this field coded for an adenocarcinoma arising in a chronic perianal fistula without extension to the anal canal, but stated to arise in "ectopic rectal tissue"? See Discussion.
MP/H Rules/Histology--Endometrium: How is histology coded when clear cell adenocarcinoma [8310/3] is stated to involve a "1.5 cm endometrial polyp"? See Discussion.
MP/H Rules/Multiple primaries--Bladder: Which multiple primary rule is used to determine the number of primaries to accession when a patient has a papillary transitional cell carcinoma of the bladder diagnosed in 2009 followed by a high grade invasive urothelial carcinoma with neuroendocrine features per immunohistochemistry diagnosed in 2010? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be accessioned for a patient with a history of CLL undergoing chemotherapy who is subsequently diagnosed on a liver biopsy with diffuse large B-cell lymphoma (Richter transformation)?
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