SEER Inquiry System - Question 20100019 Details

System Guide

Back to Search Results

SEER Inquiry System - Report

Produced: 02/04/2026 1:55 AM

Question 20100019

Export CSV Export PDF Print

Add to Report

Inquiry Details

References:

ICD-O-3

Question:

Histology--Ovary: How is histology coded for an ovarian mucinous neoplasm of low malignant potential (borderline mucinous cystadenoma) that shows extensive intraepithelial carcinoma and focal microinvasion? See Discussion.

Discussion:

At surgery a 25 cm left ovarian mass is found adherent to the anterior abdominal wall. The final diagnosis per the pathology report is, "Mucinous neoplasm (26 cm) of low malignant potential (borderline mucinous cystadenoma) with extensive intraepithelial ca and focal microinvasion. Right ovary, fallopian tubes, uterus, omentum, biopsies of diaphragm, 28 para-aortic and pelvic LNS and peritoneal fluid are all negative for malignancy."

Answer:

Histology code 8470/3 [mucinous cystadenocarcinoma] is the best choice in this case. There is a mucinous cystadenoma [8470/0] with intraepithelial carcinoma and focal microinvasion. 8470/3 comes as close as possible to the description of the tumor.

Cancer Site Category:

Ovary

Data Item Category:

Histology

Other Category:

N/A

Year:

2010