SEER Inquiry System - Search

Histology (Pre-2007)--Colon: What code is used to represent the histology "adenocarcinoma arising in a papillary adenomatous polyp"? See discussion.

Histology (Pre-2007): What code is used to represent the histology adenocarcinoma with "areas of" papillary architecture and "foci of" squamous differentiation? Even though "areas of" and "foci" are non-majority terms, should histology be coded to the combination code of adenocarcinoma with mixed subtypes [8255/3]?

Multiple Primaries (Pre-2007)/Primary site/EOD-Extension--Head & Neck: How many primaries are represented by an invasive squamous cell carcinoma of the floor of mouth with in situ squamous cell carcinoma involvement of the frenulum?

Primary Site/Histology (Pre-2007)--Unknown & ill-defined site: How are these fields coded for a markedly atypical high grade malignant neoplasm diagnosed by a fine needle aspiration of a large iliac mass, right buttock area? See Description.

Multiple Primaries (Pre-2007)--Skin: In a patient with Muir Torre syndrome, should each of 12 sebaceous carcinomas diagnosed from 1994-2005 be a new primary or should this process be one primary diagnosed in 1994?

Recurrence (Pre-2007)--Colon: When there is no statement of recurrence on the abstract, is a colon tumor at the anastomosis site a recurrence of the previous colon cancer or a new primary?

Histology (Pre-2007)--Skin: Are "atypical melanocytic hyperplasia" and "severe melanotic dysplasia" synonyms for melanoma in situ?

Multiple Primaries (Pre-2007)--Vulva/Vagina: SEER Program Code Manual rule #3 on page 11 states "If a new cancer of the same histology is diagnosed in the same site after two months, consider this new cancer a separate primary unless stated to be recurrent or metastatic. Should vulva and vagina be exceptions to rule #3, as are prostate and bladder?

Recurrence/Multiple Primaries (Pre-2007)/Primary Site--Breast: Is a malignancy that occurs in 2005 in a mastectomy scar years following an original diagnosis of breast cancer in 1971 a recurrence (not reportable) or a new primary (breast or chest wall, NOS)? See Discussion.

Multiple Primaries (Pre-2007): Would osteosarcoma of the right arm diagnosed four years after malignant fibrous histiocytoma, also in the right arm, be a second primary when the physician states, "the patient's disease progressed to sarcoma after radiation was administered?"