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.
Multiple Primaries--Lymphoma: How many primaries should be abstracted if DLBCL (9680/3) and Mantle Cell Lymphoma (9673/3) occur at the same time in different lymph nodes? How would Sequence be coded if the case is multiple primaries?
MP/H Rules/Multiple primaries--Breast: How many primaries should be reported when an in situ diagnosis is followed by an invasive diagnosis in the same breast 1.5 years later? See Discussion.
CS Site Specific Factor--Prostate: Please clarify how SEER registries should use code 040 for Site-Specific Factor 3 on prostate cases. See Discussion.
Reportability--Anal canal: Are squamous cell carcinomas arising in a condyloma of the rectum reportable or should we assume that the site is skin of anus or perianal area and not reportable?
MP/H Rules/Histology--Lung: How should Diagnosis Date, Diagnostic Confirmation and Histology be coded for the LEFT lung mass in the following case?
PET shows a 3 cm mass in the left lung and a 2.9 cm mass in the right lung. No reportable terminology in PET. The right mass is biopsied and shows adenocarcinoma. The left mass is not biopsied. Based on rule M6, this should be reported as two primaries. No additional information in medical record. Patient expired.
Primary Site/CS Extension--Lymphoma: How should these fields be coded for a malignant lymphoma with spleen involvement, inguinal and iliac adenopathy, T12 lesion with bony destruction, and a paraspinal mass in lower lumbar region with extension into iliac fossa involving left psoas muscle and causing bony destruction?
First course treatment--Leukemia: How should an allogeneic stem cell transplant for acute myeloid leukemia be coded in the Hematologic Transplant and Endocrine Procedures field? See Discussion.
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