MP/H Rules/Histology--Bladder: Can information from the CAP checklist that indicates, Tumor configuration: papillary be used to code histology to 8130 [papillary urothelial carcinoma] if the final diagnosis is also stated to be Bladder rumor: urothelial carcinoma and the pathologist stages the case as pTa [noninvasive papillary carcinoma]?
MP/H Rules/Histology--Melanoma: How is histology coded for a "melanoma in situ, lentiginous type," arising in the skin of the lower leg? See Discussion.
MP/H Rules/Multiplicity Counter--Lung: If metastatic tumors are not counted in this field, should the multiplicity counter be coded to 01 for a case with a primary left lower lobe of lung tumor with a satellite tumor in the left upper lobe?
MP/H Rules/Multiple Primaries/Histology--Prostate: How many primaries should be abstracted and how should the histology field(s) be coded for a case in which the pathology specimen showed adenocarcinoma in 20% of the tissue and sarcoma in 50% of the tissue? See Discussion.
Reportability--Brain and CNS: For von Hippel Lindau disease with multiple hemagioblastomas, is each hemangioblastoma reportable as a new primary? See Discussion.
MP/H Rules/Multiple Primaries--Head & Neck: How many primaries should be reported when an invasive squamous cell carcinoma of the right mandibular body (C06.9) was diagnosed in 2004 (treated with surgery and radical neck dissection), and an invasive squamous cell carcinoma of the left buccal mucosa (C06.0) was diagnosed in 2007? 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.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a patient is diagnosed with acute monocytic leukemia in 2009 and in 2011 has biopsy confirmed granulocytic sarcoma of the cerebellum? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a 2004 diagnosis of acute myeloid leukemia is followed by a 2013 diagnosis of myeloid sarcoma? See Discussion.