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Report Produced: 03/01/2026 23:04 PM

Report Question ID Question Discussion Answer Year
20051070 CS Lymph Nodes--Breast: Which category has priority when both apply, "Regional lymph nodes, NOS" or "Stated as N_, NOS"? See Discussion. Example: When there is a clinical diagnosis of axillary lymph node metastasis for a breast primary on a physical exam "Enlarged axillary lymph nodes suspicious for metastatic involvement", as well as a clinical N1 designation, do we code as 60 [Axillary LNS, NOS] or 26 [Stated as N1, NOS]?

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.For the example provided, assign code 25 [Movable axillary lymph node(s)...] for "Enlarged axillary lymph nodes suspicious for metastatic involvement." Code 60 [Axillary/regional lymph node(s), NOS] is the least specific and would not be used in this case because axillary nodes are defined in code 25. Code 26 is for cases in which "N1, NOS" documented by the physician is the only information available.

 2005
20051063 Primary Site/CS Tumor Size/CS Extension--Lung: How are these fields coded when a chest CT for lung cancer documents multiple masses in different lobes of the lung? See Discussion.

Example

Chest CT: "Almost complete consolidation of RUL and superior segment of RLL, highly suspicious for malignancy and represents primary bronchogenic carcinoma until proven otherwise. Multiple pulmonary masses bilaterally consistent with metastatic disease."

The physician describes multiple masses throughout RLL and LLL of lung suspicious for met disease, particularly lesion in LLL measuring 2.5 cm. The 2 cm mass in right lung abuts pleura, another mass in RLL measures 2.5 cm, smaller nodules in RLL and another 1 cm lesion abuts the pleura. Bx of a rt supraclavicular LN is positive for met carcinoma c/w lung primary.

Would primary site be coded to RLL because the scan states that the lesions on the right side represent primary bronchogenic carcinoma until proven otherwise and the 2.5 cm lesion in the RLL is the location of the largest tumor on the right? Or should site be coded to right lung, NOS and size to unknown because there is no clear statement as to which lesion on the right represents the primary tumor? If the site is lung, NOS, would CS Extension be coded to 65 to describe the multiple nodules in the RLL?

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.Based on the information provided:

Code primary site C349 [Lung]. Code laterality 1 [Right]. Code CS Tumor Size 999 [Unknown]. Code CS Extension 65 [Separate tumor nodules, same lobe]. Code CS Mets at Dx 39 [Separate tumor nodule in contralateral lung].

 2005
20051019 CS Lymph Nodes--Breast: How is this field to be coded if the pathologist staged the case pN1a and the lymph node is stated to be negative on H&E, is .3 cm on IHC stain for pancytokeratin but on review of smears shows no malignant cells?

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 CS Lymph Nodes as negative [00]. The positive stain for pancytokeratin is contradicted by the statement "malignant cells are not identified." See also sinq 20010055.

 2005
20051032 Reportability/Behavior--Brain and CNS: How is a brain "neoplasm" diagnosed only by CT scan reported to SEER? See Discussion. We have a significant number of patients who come into our emergency room and are diagnosed with a brain neoplasm by CT scan. They are transferred to another facility for further care. Some of those facilities will give us information - histology, treatment, etc. Some will not. How are we supposed to report these brain neoplasms if we don't know if they are benign or malignant? Can we report them as behavior code 9 or do we just report them as benign if we can't get any further information? The case above is reportable and 8000/1 is the most appropriate histology/behavior code. A clinical diagnosis alone from diagnostic imaging reporting a brain 'neoplasm' (with a diagnosis date supporting the reportable case requirements) even with no other information available (from biopsy or resection) is reportable. Care should be taken when reviewing terms used by the radiologist on these reports, since some tumors exhibit defining characteristics that can be picked up on diagnostic imaging. 2005
20051065 Histology (Pre-2007)--Melanoma: How is a 2004 "malignant melanoma, nodular type, epithelioid cell type" coded?

For tumors diagnosed prior to 2007:

Assign code 8771 [Epithelioid cell melanoma]. Code the cell type when specified.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

 2005
20051006 Multiple Primaries (Pre-2007)/Histology (Pre-2007)--Thyroid: How is histology coded for the tumor(s) that exist when the thyroidectomy addendum diagnosis is "Morphologic and IHC evaluations reveal two tumors: papillary thyroid carcinoma and squamous cell carcinoma." See Discussion. The original final diagnosis after a thyroidectomy is "papillary carcinoma of the thyroid with an adjacent invasive squamous cell carcinoma, moderately differentiated." Per the additional addendum comment: "The findings can be interpreted in one of 2 different ways. Either there is a collision tumor of papillary thyroid and squamous cell carcinoma (with the squamous cell ca originating at a site other than the thyroid gland.) Or, less likely, there is a malignant squamous differentiation in the papillary thyroid carcinoma." A university hospital consultation report states the diagnosis as: "Spindle cell squamous cell carcinoma arising in association and from papillary carcinoma, predominantly tall cell variant..." Is this 2 thyroid primaries: 8344/3 [papillary carcinoma, tall cell] and 8074/3 [squamous cell carcinoma, spindle cell]?

For tumors diagnosed prior to 2007:

Our pathologist consultant agrees with the consultant's diagnosis. Therefore, abstract this as one primary of the thyroid. Code the histology as 8344 [Papillary tall cell]. This is the most appropriate histology code available for this complex case.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

 2005
20051129 Reportability/Behavior--Thyroid: Does the term "invasion" indicate the presence of a malignant tumor? See Discussion. Left thyroid lobectomy showed microfollicular neoplasm with evidence of minimal invasion. Micro portion of path report stated, "The capsular contour is focally distorted by a finger of the microfollicular nodule which appears to penetrate into the adjacent capsular and thyroid tissue."

We recommend that you contact the pathologist for further information. If no further information is available, do not accession this case based on the information provided. There is no definitive statement of malignancy.

If the case was sent to a consultant, there may be another opinion available. If there is information in the record, or the treating physician can be contacted, find out whether the tumor was benign or malignant and whether there was any further treatment.

According to our pathologist consultant, based only on the information above and nothing else, do not report since there is no diagnosis of malignancy.

 2005
20051055 CS Lymph Nodes/CS Mets at Dx--Lung: In which CS field is a focus of squamous cell carcinoma in the soft tissue coded for a lung primary? See Discussion.

Final Pathologic Diagnosis:

1. Right upper lobe mass, lobectomy: Extensive well differentiated squamous cell carcinoma

2. Right hilar lymph nodes: No tumor identified in nine hilar lymph nodes. A focus of squamous carcinoma is present in soft tissue

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 a separate focus of squamous cell carcinoma in soft tissue in the CS Mets at DX field. Use this field to capture discontinuous metastasis. Code CS Mets at DX as 40 [Distant mets except distant lymph nodes] for the case described above.

 2005
20051114 Surgery of Primary Site--Colon: In the absence of detailed operative or pathology report descriptions of the specific segment(s) of the colon removed, should a hemicolectomy be coded if stated by the surgeon to be such? Yes, code hemicolectomy as stated by the surgeon when there is no conflicting or additional information avaliable. 2005
20051127 Reportability--Brain and CNS: Is an "intradural extramedullary schwannoma (neurilemoma)" of the spine reportable? See Discussion.

Example: Pt underwent laminectomy and excision of intradural extramedullary tumor.

Is there a default decision for tumors described as intradural extramedullary tumors, NOS?

For cases diagnosed 2011 and later:

A spinal "intradural extramedullary schwannoma (neurilemoma)" is reportable. This schwannoma originated in the spinal nerve root, C720.

See #2 under Reportability in the Data Collection Answers from the CoC, NPCR, SEER Technical Workgroup,

http://www.seer.cancer.gov/registrars/data-collection.html#reportability

2005