SEER Inquiry System - Search

Solid Tumor Rules/Histology--Head & Neck:  How is histology coded for nasopharyngeal non-keratinizing squamous cell carcinoma, undifferentiated type? See Discussion.

2024 SEER Manual/Reportability--Breast:  Is "lobular intraepithelial neoplasia" (LIN) a glandular intraepithelial neoplasia? If so, is lobular neoplasia II (LN II)/LIN II non-reportable, similar to PanIN II - SINQ 20240026? See Discussion.

SEER Manual/Reportability--Vulva:  Is vulvar intraepithelial neoplasia (VIN II) alone reportable? An example is a final diagnosis from a pathology report that states only 'VIN II' with no additional details/wording.

2024 SEER Manual/Primary Site--Retroperitoneum: What is the primary site code for a final diagnosis of endometrioid adenocarcinoma from a biopsy of a right retroperitoneal mass? See Discussion. 

Reportability/Histology--Lung: Are adenocarcinoma spectrum lesions on lung imaging reportable when no further information is available? See Discussion.

Reportability/Histology--Conjunctiva: Is low-grade conjunctival melanocytic intraepithelial lesion (LG-CMIL) with focal high-grade features of the conjunctiva (C690) reportable? If reportable, what histology should be assigned?

Reportability/Histology--Endometrium: Are the following terms and diagnoses synonymous with endometrioid intraepithelial neoplasia (EIN) and therefore reportable?

1. Atypical glandular epithelium

2. Isthmic-type mucosa with focal severe atypia

3. Simple hyperplasia without atypia

4. EIN/complex atypical hyperplasia (EIN/CAH) or focal EIN/CAH (on biopsy but the resection pathology or operative note states no   EIN/CAH/atypical hyperplasia)

Solid Tumor Rules/Histology--Fallopian Tube: How is histology coded for a high-grade serous carcinoma with admixed yolk sac tumor of the right fallopian tube? See Discussion.

Reportability/Histology--Heme & Lymphoid Neoplasms: Is a diagnosis of myeloid stem cell disorder or myeloid stem cell neoplasm reportable when the differential diagnosis includes only reportable neoplasms? If so, how should histology be coded? See Discussion.