Multiplicity Counter: Are in situ tumors diagnosed more than 60 days after invasive tumors of the same site and histology included in the Multiplicity Counter?
If an in situ tumor following an invasive tumor is a single primary according to the multiple primary rules for that particular site, include the in situ and the invasive tumors in the multiplicity counter.
Multiplicity Counter: Is there a time frame for the Multiplicity Counter or is it related to the duration for counting new tumors (i.e. 5 years for breast, etc) to capture the number of "local recurrences"?
Record the number of tumors counted as a single primary at the time the case is abstracted. Later, if additional tumors are determined to be the same primary, update this field once. Do not update the multiplicity counter more than once.
Multiplicity Counter: Should this field be coded to 99 for cases of familial adenomatous polyposis (FAP)? See Discussion.
The MP/H rules state to abstract these cases as a single primary. The Type of Multiple Tumors Reported as One Primary field is coded as a single primary with a value of 32 (FAP with carcinoma), but the Multiplicity Counter seems to be unknown.
Assign code 99 [Multiple tumors present, unknown how many] for cases of FAP when the number of tumors is not stated.
Neoadjuvant Treatment/Date Therapy Initiated--Breast: If Tamoxifen has been used since 2000 for the treatment of hyperplasia, should it be coded as neoadjuvant treatment for a 2004 diagnosis of breast cancer?
Do not code tamoxifen given for hyperplasia as treatment for breast cancer. In this case, tamoxifen started four years before the breast cancer diagnosis -- not treatment for breast cancer.
Other Cancer-Directed Therapy--Hematopoietic, NOS: Is there a hierarchy for selecting which code to use when a patient receives more than one type of "other treatment"? See Description.
Patient was diagnosed with Myelodysplastic Syndrome, probably refractory cytopenia with multilineage dysplasia. Good candidate for investigational studies for transfusion-dependent patients. Patient was enrolled in a high dose vitamin D study. Patient also received transfusions.
SEER has not established a hierarchy of the codes listed under Other Treatment. If the patient receives more than one type of other treatment as the first course of treatment, assign the code that provides the most information about how the patient was treated and use the remarks fields to explain.
Code Other Treatment for the case example above as 2 [Other experimental therapy]. Use the remarks fields to describe the transfusions and vitamin D therapy.
Other Therapy/Immunotherapy--Hematopoietic, NOS: How should erythropoietin be coded for leukemia or other hematopoietic diseases?
Do not code Erythropoietin as treatment, it is used as an ancillary drug for leukemias or other hematopoietic diseases. Record information about erythropoietin in the text field.
Other Therapy: Can herbal therapy be coded when used as a single therapy or when used in combination with conventional therapy as a complimentary treatment? See Discussion.
Page 201 of the SPCM 2004, item #5, states "Assign code 6 for unconventional methods whether they are single therapy or given in combination with conventional therapy." This statement itself is ok but there is no guideline on the use of complementary therapy when it is given as the only treatment. The SPCM, 3rd editon, page 140 states: "Use code '6' for alternative and complementary therapies ONLY IF the patient receives no other type of treatment." There is no such statement in the SPCM 2004.
Assign code 6 for unconventional methods whether they are single therapy (alternative medicine is the only treatment) or given in combination with conventional therapy (complementary medicine plus conventional).
Other Therapy: How do we classify "thalidomide" when it is given as cancer directed therapy?
Code to the appropriate code (1, 2 or 3) under Other Therapy, depending on whether the drug was given as part of a clinical trial. If not part of a clinical trial, assign code 1 [Other cancer-directed therapy].
Thalidomide is not FDA approved for treating cancer. It is under investigation for anti-angiogenesis effects in different cancers.
Other Therapy: What code is used to represent "gene" therapy? See discussion.
The following form of gene therapy has been described as treatment for malignant brain tumors.
Patients undergo surgery to remove as much of the tumor as possible. After surgery, the patients are infused with a virus that has been genetically altered so that it is not infectious and so that it contains a gene from the herpes simplex virus. The herpes gene is sensitive to a drug called ganciclovir. Once inside the brain, the genetically altered virus infects any remaining tumor cells. When this occurs, the herpes gene is established inside the cancer cells. After the virus infects the cancer cells, the patients are given ganciclovir. This drug would kill both the virus and the brain tumor cells.
Code the Other Cancer-Directed Therapy field to 2 [Other experimental cancer-directed therapy (not included elsewhere)].
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