Primary Site/Histology (Pre-2007): What codes are used to represent site and histology for BSO specimen with a diagnosis, "Left and right adnexa: poorly differentiated serous carcinoma. Comment: The carcinoma occurs as multiple nodules within adnexal soft tissues. Direct involvement of ovaries is not seen, supporting an extraovarian origin." See discussion.
Primary Site/Histology (Pre-2007): What are the correct site and histology codes for "tubal serous adenocarcinoma" identified in a fallopian tube? See Description.
Primary Site/Histology (Pre-2007)/Sarcoma: How do you code these fields for a vulvar tumor diagnosed by FISH analysis as "extra-osseous Ewing sarcoma?" See Description.
Primary Site/Histology (Pre-2007)/EOD Fields/Surgery of Primary Site--Abdomen, NOS: What codes are used to represent these fields for a case with a resection of the rectosigmoid and adjacent tumor mass that demonstrated no tumor in the rectosigmoid but extramural to the colon there was an endometrioid adenocarcinoma arising in association with an area of endometriosis (possibly within the pericolic soft tissue or in an ovarian remnant)?
Primary site/Histology (Pre-2007)/Behavior: What is the correct site and histology/behavior for the following diagnosis: "mucinous cystadenoma of the appendix with perforation and pseudomyxoma peritonei." This was diagnosed at e-lap for a separate adenocarcinoma of the ascending colon.
Primary Site/Histology (Pre-2007)--Rectum: How are rectal biopsies with the histology of "poorly differentiated carcinoma with mixed basaloid and squamous features" coded if, per the SEER site/histology validation table, the histology 8094/3 [basosquamous carcinoma] histology cannot be coded to the rectum for the primary site?
Primary Site/Histology (Pre-2007)--Mediastinum: How do we code these fields for a case described as a "neuroendocrine carcinoma" of the "anterior mediastinum" without failing the SEER "impossible" site/histology combination edit? See Discussion.
Primary site/Heme & Lymphoid Neoplasms: How is the primary site coded if the patient presents with diffuse B cell lymphoma involving the nasopharynx and right maxillary sinus with bilateral cervical, right supraclavicular and axillary lymph nodes? See Discussion.
Primary Site/Grade, Differentiation, Cell indicator--Lymphoma: Will a Grade, Differentiation code of 6 [B-cell] for a lymphoma coded to primary site C80.9 [unknown] fail edits? See Discussion.
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