MP/H Rules/Multiple Primaries--Lung: Please clarify the multiple primary rule M6 and the explanatory note that states when there is a single tumor in each lung, they are to be reported as multiple primaries unless stated or proven to be metastasis. See Discussion.
MP/H Rules/Histology--Brain and CNS: Is it generally correct that the code for PNET [9473/3] should be used to code tumors arising in the brain and spinal cord, and the code for pPNET [9364/3] should be used to code tumors arising in the bone and soft tissue? See Discussion.
MP/H Rules/Histology--Colon: When the microscopic description indicates a colon tumor is "tubulovillous," but the final diagnosis only states "adenocarcinoma," is the histology coded to 8263/3 [adenocarcinoma in a tubulovillous adenoma]?
MP/H Rules/Multiple primaries: Please clarify how rule M10 for Other Sites was developed and how a "recurrence" of the tumor after one year was determined to be a new primary? See Discussion.
MP/H Rules/Multiple primaries--Lung: Should a July 2011 left lower lobe mass with adenocarcinoma be accessioned as an additional primary per Rule M7 or as the same primary per Rule M12 if it is diagnosed subsequent to a September 2010 right upper lobe/right middle lobe lobectomy with clear cell adenocarcinoma in one nodule and adenocarcinoma in another nodule? See Discussion.
MP/H Rules--Breast: Patient has 2 existing primaries, both of left breast and both were pure lobular carcinoma, one was diagnosed in 1994 and the other in 2005. Now a biopsy in 2008 of a supraclavicular lymph node (laterality unknown) and subcutaneous scalp tissue show metastatic DUCTAL carcinoma. Per path report, breast is the primary site. Slides from prior tumors were not reviewed. Should this be made a new primary or assumed to be metastasis from the prior breast tumors? See Discussion.
MP/H Rules/Multiple primaries--Lung: Should a subsequent primary be abstracted using rule M8 for a patient diagnosed in January 2000 with adenocarcinoma of the right upper lung if the patient initially sought alternative therapies and presented in September 2007 for a right upper lobe lung mass with extension into the mediastinum, mediastinal lymph node mets and a pericardial effusion? See Discussion.
MP/H Rules/Multiple Primaries--Lung: If the biopsy for a lung primary is actually taken from a pleural mass, can the default rule "when there are several lung masses and only one lesion is biopsied, consider this a single primary" apply? See Discussion.
MP/H Rules/Multiple primaries--Lung: If a 1.7 cm LUL lung tumor is not treated surgically, would a 2.1 cm tumor in the same lobe three years later be a new primary? See Discussion.
An official website of the United States government
Home