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SEER Inquiry System - Report
Produced: 10/25/2025 7:19 PM
Question 20071088
Inquiry Details
References:
2007 SEER Manual, 93-94
Question:
Type of Multiple Tumors--Lung: Is this field coded to 40 [Multiple invasive] or 80 [Unk in situ or invasive] when only one nodule is biopsied of multiple existing nodules for a reported single lung primary? See Discussion.
Discussion:
The right lung has 4 tumor nodules in the upper lobe. Biopsy of one tumor is positive for moderately differentiated adenocarcinoma. No other work up performed.
Should code 40 be used because we dont know the behavior of the other nodules?
Answer:
The best code to use in this case is 40 [multiple invasive]. For lung only, it is assumed that all of the tumors are the same histology and that all are invasive.
Cancer Site Category:
Lung
Data Item Category:
N/A
Other Category:
N/A
Year:
2007
