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Reportability--Heme & Lymphoid Neoplasms: Is this a reportable case and if so what codes would be used for the primary site and histology?

Lymph node flow cytometry and bone marrow biopsy revealed involvement by a low-grade B-cell lymphoproliferative disorder. Medical oncologist states monoclonal gammopathy, question marginal zone B cell lymphoma versus lymphoplasmacytic lymphoma/lymphoproliferative disorder.

Reportability--Heme & Lymphoid Neoplasms: Should a 2011 diagnosis of Langerhans cell histiocytosis be accessioned as a reportable case if the patient had a disease free interval between the 2011 diagnosis and when the patient was initially diagnosed with Langerhans cell histiocytosis prior to 2010? See Discussion.

Reportability--Heme & Lymphoid Neoplasms: The term indolent systemic mastocytosis is listed in the 2018 ICD-O-3 Histology Update table with borderline behavior (9741/1). However, smoldering systemic mastocytosis is listed in the Hematopoietic and Lymphoid Database (Heme DB) as an alternate name for histology 9741/3. Are smoldering systemic mastocytosis and indolent systemic mastocytosis synonymous? If so, should smoldering systemic mastocytosis also be removed from the Heme DB alternate names listing? See Discussion.

Reportability--Heme and Lympoid Neoplasms--Polycythemia vera: Is secondary polycythemia vera reportable? See Discussion.

Reportability--Is "intraductal papillary mucinous neoplasm with low grade dysplasia" (also called IPMN adenoma) reportable? See Discussion.

Reportability--Kidney: Is a hybrid oncocytic tumor reportable? See Discussion.

Reportability--Kidney: Is a renal cell neoplasm stated to be multilocular clear cell renal cell neoplasm of low malignant potential a reportable tumor if the physician refers to the tumor as renal cell carcinoma in a follow-up note after surgery? If reportable, how is histology coded? See Discussion.

Reportability--Kidney: Is Bosniak 4 cystic lesion of right kidney reportable, and would the first CT date be the date of diagnosis? See Discussion.

Reportability--Kidney: Is congenital cellular mesoblastic nephroma reportable for a newborn baby? See discussion.

Reportability--Kidney: Is renal cell neoplasm of oncocytosis reportable based on the pathology from a nephrectomy? See Discussion.