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Non-genital skin primaries with a histology code equal to or less than 8110 are not reportable to SEER; therefore, the combination of C44_ and 8046/3 is not reportable.

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.Include all nodes examined by the pathologist in Regional lymph nodes positive and Regional lymph nodes examined, unless there is disease progression. These fields are cumulative -- record the total number of regional nodes positive and examined during first course of treatment. Preoperative treatment does not affect the coding of these fields.

An FNA alone, positive for regional lymph node metastasis is coded as 95 for number positive and 95 for number examined.

For the case examples above, assuming there has been no disease progression, include all nodes positive and all nodes examined from both the FNA and the lymph node dissection in the counts. Code number of regional nodes positive as 01, number examined as 07 for both examples.

For cases diagnosed prior to 1/1/2010:

There is considerable difference between therapy-related myelodysplastic syndrome (MDS) and drug-induced sideroblastic anemia (SA).

Therapy-related MDS is the result of irreversible damage to the bone marrow caused by certain kinds of myelotoxic drugs used to treat cancer. Examples are Cytoxan and Etoposide. There is usually a 10+ year delay between the first primary and its treatment and the therapy-related MDS. Therapy-related MDS is not reversible and is reportable as a malignancy. Because the drugs were almost always given to treat a malignancy, therapy-related MDS is almost always a second primary.

Drug-induced SA is not reportable as a malignancy. Drug-induced SA is the result of short term effects of certain drugs on the bone marrow. Drug-induced SA is reversible, as the marrow recovers once the drugs are out of the system.

For cases diagnosed 2010 forward, refer to the Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual and the Hematopoietic Database (Hematopoietic DB) provided by SEER on its website to research your question. If those resources do not adequately address your issue, submit a new question to SINQ.

For hospital A, follow the instructions in the 2004 SEER Manual on page 5, #4. For hospital B, the case is not reportable.

The diagnosis date is the date of first excision. Code the breast excision from Hospital A as surgery, first course treatment. The mastectomy was not part of first course treatment.

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.

Use the instructions in the CS Manual, Appendix 1, page 62. This information will be added to the 2004 SEER manual in the next update.

Do not use the Determining Descriptive Tumor Size information from EOD for CS Tumor Size.

For cases diagnosed prior to 1/1/2010:Assign code 9755 [Histiocytic sarcoma; True histiocytic lymphoma]. "Histiomonocytic" is not standard terminology, according to our expert consultant. However, 9755 is the best code to assign.

For cases diagnosed 2010 forward, refer to the Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual and the Hematopoietic Database (Hematopoietic DB) provided by SEER on its website to research your question. If those resources do not adequately address your issue, submit a new question to SINQ.

For tumors diagnosed prior to 2007:

This is a single primary. According to Exception 3 of Multiple Primary Rule 6 for multiple tumors, combinations of Paget disease and ductal carcinoma are a single primary. The histology code for this case is 8541 [Paget disease and infiltrating duct carcinoma]. Assign CS extension code 10 [confined to breast tissue] based on the information above.

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.

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.

The primary is in the right lung according to the available information.

Assign CS extension code 10 [Tumor confined to one lung]. The only information on extension is that there is a tumor in one lung.

Assign CS Lymph Nodes code 20 [Mediastinal and subcarinal lymph node involvement]. The CT scan confirms mediastinal and subcarinal lymphadenopathy.

Code tumor Size as 999 [Unknown]. "Completely obstructed" is not a size. Do not code the size of the biopsy specimen.

For tumors diagnosed prior to 2007:

The 2005 diagnosis is a new primary. The 1971 site differs from the 2005 site and there are more than two months between the two. Without further information, assign topography code C761 [chest wall]. The pattern of spread, including regional extension, is different for a primary of the chest wall compared to a primary in the breast. Coding the primary site to C761 will group this case with similar cases.

If further information can be obtained, look for old records that describe the extent of the 1971 mastectomy. It is possible that there was breast tissue left on the chest wall. Residual breast tissue is often present following mastectomy (simple, modified, or even radical). New carcinoma can develop in the remaining breast tissue.

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.