SEER Inquiry System - Question 20051002 Details

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Produced: 12/19/2025 3:22 PM

Question 20051002

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Inquiry Details

References:

2004 SEER Manual, App C, C-473 & C-483

Question:

CS Tumor Size/CS Site Specific Factor 6--Breast: How are these fields coded for a tumor stated to have only in situ disease in the breast with bone metastasis identified on scan? See Discussion.

Discussion:

4/20/04 Quadrantectomy: "Tumor involves a significant portion of the biopsy and is estimated at 10 cm in greatest dimension." The only other mention of size is from imaging studies which is 3.5 cm. The histology is "high grade ductal carcinoma with comedo necrosis. No invasive carcinoma identified." Bone scan on 4/20/04 shows "widespread metastatic disease to bone." By rule the behavior code for this case is changed to malignant.

Answer:

This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.

Code tumor size as 100 [10 cm]. Size from pathology or operative report is preferred over size from imaging.

Code SSF6 as 050 [Invasive and in situ components present, size of entire tumor coded in CS Tumor Size because size of invasive component not stated and proportions of in situ and invasive not known.]

There is invasive tumor present (as proven by the bone metastasis), but the size and proportion of the invasive component is unknown.

Please note: Extension must be coded at least to 10 [Confined to the breast tissue and fat including nipple and areola; Localized, NOS] in this case. Do not assign extension code 00 [in situ].

Cancer Site Category:

Breast

Data Item Category:

N/A

Other Category:

N/A

Year:

2005