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20120062 | MP/H Rules/Multiple primaries--Breast: How many primaries are accessioned if a patient has a history of breast cancer in 2006 treated with bilateral mastectomies and in 2011 is found to have invasive carcinoma in "breast tissue, right lumpectomy"? See Discussion. |
Patient was originally diagnosed in June 2006, with right breast cancer and underwent lumpectomy and chemotherapy. This was followed by a bilateral mastectomy with reconstruction in January of 2007 that showed no residual tumor in the breast but 1 positive right axillary lymph node. The patient started Arimidex in May 2007 and had ongoing follow-up. In November 2011, the patient noted a "lump to her right upper reconstructed breast at approximately 2:00." Needle biopsy in December 2011 showed invasive carcinoma and the patient underwent a lumpectomy. The lumpectomy pathology report stated, "Breast tissue, right, lumpectomy: poorly differentiated infiltrating ductal cancer." There is no comparison of the current pathology to the previous pathology, as the previous lumpectomy/mastectomy was done at another facility. The patient is being treated at this facility with radiation as if this is a "recurrent/persistent right sided breast cancer." Should this case be classified as a new primary because the pathology report indicates the malignancy was in breast tissue? Or is this actually a chest wall recurrence given the fact that the patient was previously treated with bilateral mastectomies? Should this case be treated as indicated in SINQ 20110111? |
For cases diagnosed 2007 or later, accession two primaries, right breast cancer diagnosed in June 2006 and a subsequent right breast primary diagnosed in December 2011. The steps used to arrive at this decision are: Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Breast MP rules because site specific rules exist for this primary. Start at the MULTIPLE TUMORS module, rule M4. The rules are intended to be reviewed in consecutive order within a module. Accession two primaries, tumors diagnosed more than five (5) years apart are multiple primaries. If the pathology report stated the tumor originated in residual breast tissue, then this is a new tumor and, therefore, a new primary per rule M5. If the pathology report stated the tumor arose in the chest wall and/or there is no designation of residual breast tissue, then this is a regional metastasis and not a new primary. |
2012 |
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20110092 | MP/H Rules/Multiple primaries--Breast: How many primaries are accessioned when a pathology specimen reveals one tumor with invasive mucinous carcinoma [8480/3] and a second tumor with in situ ductal carcinoma, solid and cribriform types [8523/2]? |
For cases diagnosed 2007 or later, accession two primaries, invasive mucinous carcinoma [8480/3] and in situ ductal carcinoma, solid and cribriform types [8523/2]. The steps used to arrive at this decision are: Go to the Breast MP rules found in the Multiple Primary and Histology Coding Rules Manual after determining the histology of each tumor (8480/3 and 8523/2). Start at the MULTIPLE TUMORS module, rule M4. These tumors have ICD-O-3 histology codes that are different at the second (xxx) and third (xxx) number and are, therefore, multiple primaries. |
2011 | |
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20120095 | MP/H Rules/Multiple primaries--Breast: How many primaries are accessioned if a patient is diagnosed with inflammatory carcinoma of the left breast, (ductal with apocrine features type on biopsy), and an incidental lobular carcinoma in the right breast? See Discussion. | A 1.2 cm lobular carcinoma was incidentally discovered during the work-up of the patient's left breast that was inflammatory carcinoma. The lobular carcinoma on the right was localized without any skin involvement. Rule M6 indicates inflammatory breast carcinoma in either breast is a single primary. Does rule M6 apply when the patient has inflammatory carcinoma in one breast and a separate lobular carcinoma in the other? | For cases diagnosed 2007 or later, accession two primaries, ductal with apocrine features in the left breast and lobular carcinoma in the right breast.
The steps used to arrive at this decision are:
Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Breast MP rules because site specific rules exist for this primary.
Start at the MULTIPLE TUMORS module, rule M4. The rules are intended to be reviewed in consecutive order within a module. The patient has tumors in both the right and left breasts.
Rule M6 does not apply because inflammatory carcinoma involves only the left breast and the patient has a different histology in the right breast and there is no mention of inflammatory carcinoma in that breast. In this situation continue to the next applicable rule. |
2012 |
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20120082 | MP/H Rules/Multiple primaries--Breast: How many primaries are accessioned if the patient has two tumors in the left breast, one that is ductal carcinoma with mucinous differentiation and the other is ductal carcinoma, NOS? See Discussion. |
The final diagnosis from the left mastectomy was multifocal invasive ductal carcinoma (mpT1cN0) with associated intermediate grade ductal carcinoma in situ located between the invasive foci. Larger 2:00 focus: moderately differentiated ductal carcinoma with mucinous differentiation (1.4 cm). Smaller 3:00 focus: moderately to poorly differentiated ductal carcinoma (1.2 cm). The histologies of the invasive foci should be coded 8523/3 and 8500/3 respectively. To determine the number of primaries, does rule M11 apply which indicates this should be a single primary even though ductal with mucinous differentiation is not in Tables 1 or 2? Or does rule M12 apply because there is a difference in the third digit of histology and thus means this should be reported as a multiple primary case? |
For cases diagnosed 2007 or later, accession two primaries, ductal carcinoma with mucinous differentiation [8523/3] and ductal carcinoma, NOS [8500/3]. The steps used to arrive at this decision are: Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Breast MP rules because site specific rules have been developed for this primary. Start at the MULTIPLE TUMORS module, rule M4. The rules are intended to be reviewed in consecutive order within a module. These tumors have ICD-O-3 histology codes that are different that the third (xxx) digit and are, therefore, multiple primaries. Ductal carcinoma with mucinous differentiation is not a specific type of ductal carcinoma identified in either Table 1 or 2. (To locate Tables 1 and 2, go to Breast under the Terms & Definitions section of the manual.) It is ductal carcinoma mixed with another type of carcinoma (mucinous carcinoma in this case) see Table 3. Rule M11 does not apply. |
2012 |
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20120061 | MP/H Rules/Multiple Primaries--Ovary: How many primaries are accessioned and which multiple primary rule applies for a patient diagnosed with a carcinosarcoma of the left ovary and a serous carcinoma of the right ovary? See Discussion. |
The patient underwent a debulking surgery showing a 20.5 cm carcinosarcoma with focal areas of high grade serous carcinoma and extensive high grade stromal sarcoma in the left ovary. The right ovary showed only a high grade serous carcinoma with extensive involvement of the ovarian parenchyma but no sarcomatous elements. While carcinosarcoma is composed of both epithelial and non-epithelial elements, does the presence of a purely epithelial tumor in the contralateral ovary indicate these are separate primaries per rule M8? |
For cases diagnosed 2007 or later, accession two primaries, carcinosarcoma [8980/3] of the left ovary and serous carcinoma [8441/3] of the right ovary. The steps used to arrive at this decision are: Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). After determining the histology of each tumor (8980/3 and 8441/3), go to the Other Sites MP rules because ovary does not have site specific rules developed Start at the MULTIPLE TUMORS module, Rule M3. The rules are intended to be reviewed in consecutive order within a module. Stop at the first rule that applies to the case you are processing. Review Table 1 (Paired Organs and Sites with Laterality) to determine whether ovary is a paired site. To locate Table 1, go to Other Site under the Terms & Definitions section of the manual. Ovary is listed as a paired site. Accession multiple primaries when there are tumors on both sides (right and left) of a site listed in Table 1 (Paired Organs and Sites with Laterality). Carcinosarcoma [8980/3] is not an epithelial tumor of the ovary within the range of 8000-8799 and, therefore, Rule M7 does not apply. |
2012 |
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20120088 | MP/H Rules/Multiple primaries--Head & Neck: How many primaries are accessioned and what rule applies if a patient has an extensive tumor in the left ethmoid sinus and a separate tumor in the right maxillary sinus? See Discussion. |
MRI and CT Neck Impression: Extensive tumor mass which likely originated within the left ethmoid sinus and extends intracranially via the cribriform plate into the anterior cranial fossa. There is involvement of the left orbit and extension into the superior aspect of the left maxillary sinuses as well as the nose. Second enhancing lesion within the right maxillary sinus measures almost 2 cm. The second mass within the floor of the right maxillary sinus, with similar imaging characteristics, is consistent with malignant involvement. The patient has an extensive ethmoid sinus tumor, biopsy showed squamous cell carcinoma. The ethmoid sinus is not a paired organ. The patient also has a small maxillary tumor with no histologic confirmation, Hem/Oncology chart notes state the right maxillary sinus mass is carcinoma. The maxillary sinus is a paired organ. Per the AJCC Manual (AJCC Manual for Staging, 7th edition, page 70), both the ethmoid and maxillary sinuses are further identified by their laterality (left and right). Why aren't the ethmoid sinuses a paired organ for the MP/H Rules? What MP rule applies to this case? |
For cases diagnosed 2007 or later, accession a single primary. The steps used to arrive at this decision are: Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Head and Neck MP rules after determining the histology of each tumor - (8070/3 [squamous cell carcinoma] and 8010/3 [carcinoma, NOS]) because site specific rules have been developed for this primary. Start at the MULTIPLE TUMORS module, Rule M3. The rules are intended to be reviewed in consecutive order within a module. Abstract a single when one tumor is carcinoma, NOS [8010] and another tumor is a specific carcinoma, squamous cell carcinoma [8070] because the ethmoid sinus (site of origin) is not a paired site per the MP/H rules. We will review the list of paired organs for the next edition of the MP/H Rules. |
2012 |
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20130012 | MP/H Rules/Multiple primaries--Urinary: If topography codes C681-C689 are not included in Urinary Multiple Primary Rule M8, would a subsequent renal pelvis papillary transitional cell carcinoma be a new primary? See Discussion. |
The patient had a papillary transitional cell carcinoma of the bladder and ureter diagnosed in 2010. The primary site was coded to C689 [urinary system, NOS]. The patient was diagnosed with a transitional cell carcinoma of the renal pelvis [C659] in 2012. In applying the MP/H rules to the 2012 diagnosis, rule M8 would be ignored because the primary site of the 2010 primary was coded to C689. The result is that M9 or M10 would be applied which indicates a new primary for the 2012 diagnosis. Should the 2012 renal pelvis carcinoma be a new primary? |
For cases diagnosed 2007 or later, accession a single primary, papillary transitional cell carcinoma of the bladder and ureter [C689, urinary system, NOS] diagnosed in 2010. The steps used to arrive at this decision are: Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Urinary MP Rules because site specific rules exist for this primary. Start at the MULTIPLE TUMORS module, rule M3. The rules are intended to be reviewed in consecutive order within a module. This patient has urothelial tumors in two or more of the listed sites (bladder, ureter and renal pelvis) diagnosed within 3 years. When C689 is assigned because tumors of the bladder and tumors of the ureter were determined to be a single primary and the site of origin is not known (as in this example), rule M8 is applied when a subsequent tumor is diagnosed in one of the listed sites. However, if site C689 [urinary system, NOS] was assigned for other unknown urinary primary site situations, rule M8 would not be used. Rule M8 was written specifically for urothelial tumors in the renal pelvis, ureter, bladder and urethra. Paraurethral gland [C681] and overlapping lesions of urinary organs [C688] do not belong in rule M8. We will add this issue to the list of possible revisions for the next edition of the MP/H Rules. |
2013 |
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20120092 | MP/H Rules/Multiple primaries/Recurrence -- Lung: How many primaries are accessioned if a diagnosis of squamous cell carcinoma of the lung is followed three years later by a diagnosis of adenocarcinoma of the lung if the pathologist reviews all the slides and states the subsequent diagnosis is a recurrence? See Discussion. | 7/12/2007 Left upper lobe lung lobectomy: Squamous cell carcinoma.
3/09/2010 Left lung completion pneumonectomy: Adenocarcinoma, predominantly acinar. The diagnosis comment on the pathology report indicates the previous lobectomy specimen from 2007 was reviewed and "there are areas that appear histologically similar to the current neoplasm. Thus, the findings are most compatible with recurrence."
Despite the difference in histology, is this a single primary per the MP/H Coding Rules, General Information instruction 7 because the pathologist did refer to the 3/9/2010 diagnosis as a "recurrence" of the 7/12/2007 diagnosis after reviewing the slides? |
For cases diagnosed 2007 or later, accession a single primary, left upper lobe squamous cell carcinoma diagnosed 7/27/2007.
The steps used to arrive at this decision are:
Go to the General Information notes for Determining Multiple Primaries for Solid Malignant Tumors in the Multiple Primary and Histology Coding Rules Manual.
General Information Rule 7 states "Use the multiple primary rules as written unless a pathologist compares the present tumor to the "original" tumor and states that this tumor is a recurrence of cancer from the previous primary."
Accession a single primary. Do not apply the Multiple Primary rules because the pathologist compared the 2007 and 2010 slides and determined this was a recurrence and not a new primary. |
2012 |
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20120084 | MP/H Rules/Multiple primaries/Histology: How many primaries are accessioned and how is the histology coded if a patient has a 1.2 cm hepatocellular carcinoma and a 7 cm hepatocellular carcinoma, solid, acinar and trabecular type? See Discussion. | FINAL Diagnosis: 2 separate lesions of the liver 1)1.2 cm hepatocellular carcinoma and 2) 7 cm hepatocellular carcinoma, solid, acinar, and trabecular type. | For cases diagnosed 2007 or later, accession a single primary, hepatocellular carcinoma [8170/3].
The steps used to arrive at this decision are:
Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text) and go to the Other Sites MP rules because liver does not have site specific rules developed.
Start at the MULTIPLE TUMORS module, rule M3. The rules are intended to be reviewed in consecutive order within a module. There is one tumor with HCC and another tumor with a specific type of HCC.
Hepatocellular carcinomas vary and often display different architectural patterns such as solid, acinar and trabecular. |
2012 |
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20130054 | MP/H Rules/Multiple primaries--Lung: How many primaries are accessioned if a lobectomy has two tumors that are both stated to be adenocarcinoma but the pathologist states they are synchronous primaries? See Discussion. | Left upper lung lobectomy: Adenocarcinoma, poorly-differentiated (grade 3), tumor size 1.2 cm, confined to lung. Second primary lung tumor: adenocarcinoma, well-differentiated (grade 1), tumor size 0.9 cm, confined to lung. Diagnosis COMMENT: The two tumors, although both adenocarcinoma, show markedly different histologies and thus are classified as synchronous primaries. Multiple synchronous primaries are staged separately according to the 7th edition of AJCC.
The AJCC Staging Manual 7th ed states, "Multiple tumors may be considered to be synchronous primaries if they are of different histological cell types. When multiple tumors are of the same cell type, they should only be considered to be synchronous primary tumors if, in the opinion of the pathologist, based on features such as ..., they represent different subtypes of the same histologic cell type..."
In this case, the pathologist insists these are two synchronous primaries, although different subtypes are not given, because the tumors have different grades and look completely different under the microscope. The MP/H rules indicate this is a single primary. How many primaries are accessioned? |
For cases diagnosed 2007 or later, accession a single primary, adenocarcinoma [8140/3] of the left upper lobe lung [C341]. The steps used to arrive at this decision are:
Open the Multiple Primary and Histology Coding Rules Manual. Choose one of the three formats (i.e., flowchart, matrix or text). Go to the Lung MP rules because site specific rules exist for this primary.
Start at the MULTIPLE TUMORS module, rule M3. The rules are intended to be reviewed in consecutive order within a module. The patient has two tumors in the same lung with the same histology.
Do not use the AJCC Manual to make multiple primary decisions. Use the MP/H Rules to determine the number of primaries to accession. |
2013 |
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