MP/H Rules--Colon: What histology would you assign to a single tumor with the histology 'well differentiated mucinous cystadenocarcinoma in a villous adenoma confined to the appendix'? Does rule H4 apply to this diagnosis or should we continue on in the rules to H14 and code the higher histology?
For cases diagnosed 2007 or later, use rule H4.
Stop at the first rule that applies to the case. Rule H4 is the first rule that applies.
The polyp rule, H4, comes before many of the other colon rules because it is important to know that the malignancy originated in a polyp.
MP/H Rules--Breast: What is the histology code for a breast tumor that is ductal ca with focal squamous differentiation? See Discussion.
SINQ 20021062 states for cases Dx'd prior to 2007, use 8570. Is 8570 also used when the squamous differentiation is focal?
For cases diagnosed 2007 or later, use rule H14 and code the histology 8500 [duct carcinoma]. Ignore histologies described as "focal," "focus," or "foci." This instruction will be added to the histology rules in the upcoming revision of the MP/H manual.
MP/H Rules--Breast: What histology code is used for lobular carcinoma, pleomorphic type?
For cases diagnosed 2007 or later, use rule H14 and code the histology 8520 [lobular carcinoma]. 8520 is the only ICD-O-3 code for lobular carcinoma. There are no codes for specific lobular types.
MP/H Rules--Breast: For tubulolobular carcinoma, do we use 8522? See Discussion.
Path comment: This mixed variant of ductal and lobular carcinoma has been called in the past tubulolobular carcinoma, however, more recently is a mixed pattern of ductal and lobular carcinoma and not a variant of lobular carcinoma.
For cases diagnosed 2007 or later, use rule H18 and assign code 8524 [lobular mixed with other types of carcinoma]. According to the MP/H rules, tubular is not a specific type of duct or lobular. This is based on the latest WHO classification of breast tumors.
The combination histology of tubular and lobular will be reviewed during the upcoming revision of the MP/H rules.
MP/H Rules--Lung: Per rule M8, tumors of the same site (left lung), same histology (NSCC), greater than 3 yrs apart are separate primaries.
However, there was a recurrence to mediastinal LNs after 2 years. Would that make a difference as to whether the 2008 left lung carcinoma is reportable as a new primary or not? See Discussion.
Scenario: NSCC 2004 LLL with positive hilar/mediastinal LNs treated with LLL lobectomy, chemo and rad. 2006 per CT/PET recurrence in mediastinal LNs treated with chemoradiation. 2008 left lung nodule positive for NSCC stated by MD to be recurrence from 2004 (2008 path not compared to 2004 path).
For cases diagnosed 2007 or later:
The 2008 lung carcinoma is a separate primary according to rule M8. The 2006 diagnosis is metastases to the lymph nodes. Do not apply the MP/H rules to metastases.
CS Extension--Corpus uteri: Can a suspicious cytology be used to code extension? See Discussion.
Endometrial primary confirmed by biopsy on 10/26/06. Pelvic washing on 11/14/06 was 'suspicious for malignancy.' Resection path the same day stated the primary tumor invades the inner 1/3 of the myometrium.
Can we use the pelvic washing cytology & code CS extension 61 or should CS extension be coded 12?
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.Assign extension code 61 [cancer cells in peritoneal washings] for the case described above.
"Suspicious" is listed as a term indicating involvement. There is no exception noted for cytology reports. See page 122 of the 2007 SEER manual.
MP/H Rules/Histology--Lung: What is the correct histology code for a neuroendocrine neoplasm described as a carcinoid and also referred to as oncocytic? See Discussion.
Left mainstem bronchus mass excised: metaplastic endobronchial mucosa with submucosa containing an infiltrating poorly diff malignant tumor. Origin of tumor is not identified in overlying mucosa. IHC stains will be performed.
Addendum #1. IHC stains show well diff neuroendocrine neoplasm, favor carcinoid. Recommend sending this to expert in lung neoplastic pathologist.
For cases diagnosed 2007 or later, code as 8246 [Neuroendocrine carcinoma, NOS]. According to our pathologist consultant, the neuroendocrine description is more specific than the oncocytic description in this case.
Date Multiple Tumors--Prostate: For a prostate biopsy done 10/20/08, both lobes involved with tumor, unknown how many tumors, what would be coded in date of multiple tumors?
In this case, code the date of the biopsy in Date of Multiple Tumors [10202008]. When the number of tumors is unknown, code the date of diagnosis as the Date of Multiple Tumors. This is the date on which it was determined that there were an unknown number of tumors. This instruction will be added to next edition of the MP/H manual.
MP/H Rules--Lung: How do we interpret 'spiculated opacities?' How many primaries do we abstract for this patient? See Discussion.
Patient admitted for CT scan of chest. Impression: A small subpleural spiculated opacity is noted in the left upper lobe measuring 9.7x7.7mm. Right upper lobe spiculated nodular opacity measures 13.9x5.9mm. Right lower lobe scattered faint alveolar nodular opacities are noted. The lungs are otherwise clear. Abnormal soft tissue density mass is noted of the right hilum surrounding the distal main right pulmonary artery. Bronchoscopy/mediastinoscopy done: rare malignant cells present consistent with small cell carcinoma, specimen submitted as brushing of right bronchus intermedius. The tumor in the lymph node is metastatic small cell carcinoma. Patient discharged to hospice; died 5 weeks later.
Do the MP/H rules pertain only to the measured opacities in each lung and not to the RLL scattered faint alveolar nodular opacities? The right side was cytologically confirmed. But if we abstract the left lung, what is the histology...8041 or 8000?
For cases diagnosed 2007 or later:
Because there was cytologic confirmation of cancer, for this case only count the spiculated opacities as tumors. Abstract as a single primary using Rule M1. Note 2 under lung rule M1 applies to this case.
Code the histology as 8041 [small cell carcinoma] per rule H10.
CS Lymph Nodes/CS Mets at DX--Ovary: Are lymph nodes in the pericolic mesentery of the sigmoid that are removed during ovarian cancer debulking surgery, coded as regional or distant? See Discussion.
Debulking surgery found tumor in both ovaries and in lymph nodes of pericolic mesentery, which was removed en bloc with a segment of sigmoid colon (colon had tumor implants involving serosa). Pericolic nodes are not listed as regional for ovary. However Note 2 in the CS manual for Extension states "sigmoid mesentery" is a regional pelvic organ, and that metastatic deposits here should be coded in the extension field, not as distant mets. Should lymph nodes from this same area be coded as regional or distant?
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.
Lymph nodes in the mesentery of the sigmoid colon are regional for an ovarian primary. Code involved sigmoid mesenteric nodes under CS Lymph Nodes.
An official website of the United States government
Home