Question: 20180113

Status


Final

Category


#1:   Solid Tumor Rules (2018)
#2:   Histology
#3:   Lung


References


Source 1:   2018 Solid Tumor Rules
pgs:  
Notes:   Lung, 10/12/2018
Source 2:  
pgs:  
Notes:  


Question


Solid Tumor Rules (2018)/Histology--Lung:  What is the histology code of a 2018 lung cancer case with invasive non-mucinous adenocarcinoma?  For non-mucinous carcinoma/adenocarcinoma, the Solid Tumor Rules have codes for microinvasive, minimally invasive, preinvasive, and in situ. Do we default to the microinvasive/minimally invasive code?



Discussion




Answer


Code histology to adenocarcinoma, NOS (8140/3).  The World Health Organization and the College of American Pathologists no longer recognize non-mucinous carcinoma/adenocarcinoma, NOS. Pathologists are discouraged from using this term. Microinvasive/minimally invasive lung tumors have very specific criteria and these criteria do not apply to non-mucinous carcinoma, NOS.



History




Last Updated


12/20/2018

Date Finalized


02/14/2019