Question: 20170068

Status


Final

Category


#1:   MP/H Rules
#2:   Histology
#3:   Lung


References


Source 1:   ICD-O-3
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Notes:  
Source 2:   2007 MP/H Rules
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Notes:  


Question


MP/H Rules/Histology--Lung:  What is the histology of a lung tumor described as solid predominant with mucin production, 8230/3 (Multiple Primaries/Histology (MP/H) Rule 5) or 8255/3 (MP/H Rule 6)?  See Discussion.



Discussion


Pathology report:  Left lower lobe lung, Tumor Size: Greatest dimension: 3.0 cm Additional dimensions: 2.5 x 2.0 cm; Tumor Focality: Unifocal; Histologic Type: Invasive adenocarcinoma Solid predominant with mucin production; Histologic Grade: G3: Poorly differentiated.  Is the correct histology for this case 8230/3 (rule H5) or 8255/3 (rule H6)?



Answer


Code histology as 8230/3, solid adenocarcinoma with mucin formation, using MP/H Rule H3 as one histologic type is identified. All of the histologic terms (solid, mucin production) are covered by 8230/3. Therefore, rule H3 applies. Use the first rule that applies, and stop.



History




Last Updated


10/16/2017

Date Finalized


01/10/2018