SEER Inquiry System - Question 20071097 Details

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Question 20071097

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Inquiry Details

References:

#1: 2007 SEER Manual, 90-91

#2: MP/H Clarifications, 340. Nov. 2007

Question:

Multiplicity Counter--Thyroid: How is multiplicity counter to be coded for a thyroid cancer presenting as multiple foci? See Discussion.

Discussion:

Thyroidectomy showed papillary thyroid carcinoma. Path diagnosis: tumor focality: multifocal. Path described 3 foci of tumor on each side. The main tumor mass in right thyroid was 1.5 cm. Smaller foci of tumor ranged in size from .1 cm to 1.0 cm. Per guidelines, "we still don't count foci as tumors for the purpose of these rules, even if there is more than one." The 1 cm tumor was probably macroscopic in size. Do we count it in the multiplicity counter? Do we count only the 1.5 cm main tumor mass?

Answer:

If the number of tumors is known, code the number in Multiplicity Counter. If foci are measured, include them in the multiplicity counter. If the only information available is "multiple foci" assign code 99.

For the case above, code 06 in the multiplicity counter (3 tumors on each side).

Cancer Site Category:

Thyroid

Data Item Category:

N/A

Other Category:

N/A

Year:

2007