Question: 20190104

Status


Final

Category


#1:   Histology
#2:   Corpus uteri
#3:  


References


Source 1:   ICD-O-3
pgs:  
Notes:  
Source 2:  
pgs:  
Notes:  


Question


Histology--Corpus uteri:  Is 8020/3 used for a predominantly dedifferentiated carcinoma with focal well-differentiated endometrioid adenocarcinoma diagnosed in 2018?  See Discussion.



Discussion


After a little research, it appears as though Endometrial Dedifferentiated carcinoma is a relatively new term and  is set to be included in ICD-O-3.2:

http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577

If you look at the link on that page for All Additions, Changes, and Revisions to the ICD-O-3, 1st Revision for ICDO-3.2, there is 8020/3 Dedifferentiated carcinoma. Currently, 8020/3 is Carcinoma, undifferentiated, NOS. For 2018 diagnosis, would you use 8020/3 for a predominantly dedifferentiated carcinoma with focal well-differentiated endometrioid adenocarcinoma as stated in the pathology: Uterus, bilateral ovaries and fallopian tubes; supracervical hysterectomy/BSO: Predominantly dedifferentiated carcinoma with focal well-differentiated endometrioid adenocarcinoma in the endometrium, FIGO grade 1 Portion of omentum, omental/anterior abdominal wall/ round ligament/uterine/small bowel mesenteric tumor nodules all involved by dedifferentiated carcinoma. Synoptic reads as follows: Histological Type: Endometrioid carcinoma, NOS Dedifferentiated carcinoma predominantly Histological Grade: Endometrioid carcinoma, FIGO grade 1.



Answer


Assign code 8380/3 for endometrioid carcinoma, NOS as this is listed as the histological type in the synoptic report.



History




Last Updated


12/17/2019

Date Finalized


01/17/2020