Report | Question ID | Question | Discussion | Answer | Year |
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20180033 | Reportability--Corpus uteri: Is smooth muscle tumor with uncertain malignant potential (STUMP) reportable? See Discussion. |
Spindled cell lesion of smooth muscle origin (desmin and SMA are positive, CD34, S100, pancytokeratin, Pax8, MDM2 and CDK4 are negative). Many of the cells have hyperchromatic, bizarre-shaped nuclei. Mitotic activity is inconspicuous. There are no areas of necrosis. The overall findings in this biopsy is best classified as a "STUMP"; however, a leiomyosarcoma cannot be excluded. |
STUMP (smooth muscle tumor of uncertain malignant potential) is not reportable. According to the WHO classification of uterine corpus tumors, the behavior code for STUMP is /1. |
2018 |
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20180079 | Solid Tumor Rules/Multiple primaries--Breast: How many primaries should be abstracted when papillary carcinoma is identified in two biopsies and a subsequent lumpectomy identified invasive ductal carcinoma with multifocal ductal carcinoma in situ (DCIS)? See Discussion. |
The right breast ultrasound shows a 1.4 cm mass at 8 o'clock and a separate mass .6 cm at 7 o'clock (site code for both C50.5). Pathology report: Right 8 o'clock core needle biopsy fragments of intracystic noninvasive papillary carcinoma (8504/2), right 7 o'clock core needle biopsy fragments of intracystic noninvasive papillary carcinoma (8504/2). Then, another facility performs a right breast lumpectomy (operative note not available). Outside Facility: Right breast lumpectomy pathology shows invasive ductal carcinoma .6cm (8500/3) multifocal DCIS .5cm greatest dimension tumor site right breast NOS. Should we use Rule M12-Abstract multiple primaries when separate/non-contiguous tumors are on different rows in Table 3 in the Equivalent Terms and Definitions. Timing is irrelevant. Note: Each row in the table is a distinctly different histology. So would this be two primaries C50.5 (8504/2) and C50.9 (8500/3)? |
Abstract as multiple primaries using Breast Solid Tumor Rule M12 as these are separate, non-contiguous tumors on different rows in Table 3. |
2018 |
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20180107 | Solid Tumor Rules (2018)/Histology--Lung: If the pathology states non-small cell carcinoma of the lung (NSCLC), consistent with squamous cell carcinoma, is the code non-small cell carcinoma according to the Solid Tumor Rules? The Medical Oncologist states that the tumor is a squamous cell carcinoma. In these instances would you code the squamous cell carcinoma since you have a definite physician statement? |
Code the histology to SCC 8070/3. Based on registrar feedback on the NSCLC rule, we added a rule that specifically addresses when ambiguous terminology can be used to code histology other than NSCLC. The lung rules were update 10/12/2018 so please make sure you are using the currently posted rules. The new rule is: Rule H3-Code the specific histology when the diagnosis is non-small cell lung carcinoma (NSCLC) consistent with (or any other ambiguous term) a specific carcinoma (such as adenocarcinoma, squamous cell carcinoma, etc.) when: * Clinically confirmed by a physician (attending, pathologist, oncologist, pulmonologist, etc.) * Patient is treated for the histology described by an ambiguous term * The case is accessioned (added to your database) based on ambiguous terminology and no other histology information is available/documented Example 1: The pathology diagnosis is NSCLC consistent with adenocarcinoma. The oncology consult says the patient has adenocarcinoma of the right lung. This is clinical confirmation of the diagnosis, code adenocarcinoma. Your case meets the criteria in bullet 1. |
2018 | |
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20180070 | Solid Tumor Rules (2018)/Histology--Lung: The Histology coding guidelines for lung cancer state to code histology when stated as type or subtype but not to code when described as pattern. How should the histology be coded (Adeno, NOS or Adeno, Mixed subtypes) if the College of Americal Pathologists Protocol of the pathology report lists the following: Histologic type: Adenocarcinoma, papillary (90%), lepidic (8%), and solid (2%) patterns? |
The term/modifier "patterns" is no longer allowed to code a specific histology according to the Lung Solid Tumor H rules. Disregard the papillary, lepidic, and solid patterns and code histology to adenocarcinoma, NOS (8140/3). |
2018 | |
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20180021 | Solid Tumor Rules (2018)/Histology--Corpus uteri: What is the correct histology code for "Mesophrenic-like adenocarcinoma" of the corpus uteri?" See Discussion. |
The article I read (https://www.ncbi.nlm.nih.gov/pubmed/?term=28984674) makes the distinction between mesophrenic adenocarcinoma and mesophrenic-like adenocarcinoma. The authors propose the term mesonephric-like Mullerian adenocarcinoma. So would this be coded as Mullerian adenocarcinoma? |
Assign code 9110/3, mesonephric adenocarcinoma. These tumors commonly arise in the cervical wall and more commonly involve the lower uterine segment than do other cervical adenocarcinomas. |
2018 |
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20180093 | 2018 Solid Tumor Rules/Multiple primaries--Lung: What is the histology and number of primaries for a lung case diagnosed in 2018 with adenocarcinoma with acinar predominant pattern on biopsy, and subsequent lobectomy showing adenocarcinoma with solid growth pattern and separate adenocarcinoma with lepidic predominant pattern? Should this be coded as one primary with an adenocarcinoma, NOS (8140/3) histology since we cannot use pattern or predominant, based on the histologic type listed in the synoptic report, and the fact it states synchronous primary tumors in the same lobe. See Discussion. |
02/18 RUL biopsy: Moderatley differentiated adenocacarcinoma with acinar predominant pattern 04/18 RUL lobectomy: 6.5cm poorly differentiated adenocarcinoma with solid growth pattern and 1.1 cm separate adenocarcinoma with lepidic predominant pattern Synoptic report: Procedure: Lobectomy Specimen Laterality: Right Tumor Tumor Site: Upper lobe Histologic Type: Invasive adenocarcinoma, solid predominant Tumor Size: 6.5 Centimeters (cm) Tumor Focality: Synchronous primary tumors in same lobe Lymph Nodes Number of Lymph Nodes Involved: 0 Number of Lymph Nodes Examined: 12 Nodal Stations Examined: 4R: Lower paratracheal; 8R: Para-esophageal (below carina); 10R: Hilar; 7: Subcarinal Pathologic Stage Classification (pTNM, AJCC 8th Edition) Primary Tumor (pT): pT3 Regional Lymph Nodes (pN): pN0 |
This is a single primary per Lung rule M7. First determine the histology for each tumor. Both tumors are coded 8140/3 because the histologies are a PATTERN. Reference: Coding Multiple Histologies (precedes histology rules) Instruction 2 says do not code pattern . If the word pattern was not in the diagnosis, you would code the specific histology. |
2018 |
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20180035 | Solid Tumor Rules (2018)/Multiple Primaries--Lung: How many primaries should be abstracted in this 2018 lung case? See Discussion. |
CT chest findings: 1. There is a dominant 1 cm. nodule in the left mid lung. 2. In addition, there is a new rather dominant bilobed nodule in the left lung base. 3. Distant metastases are not identified. Four months later, a doctor's note says routine follow-up visit status post Cyber Knife stereotactic body radiation therapy for synchronous early stage non-small cell carcinomas of the left upper and left lower lobes, both Stage IA. He is medically inoperable. This situation is described as a second primary tumor in AJCC8 page 438. However, by the 2018 Lung Solid Tumor rules, this would be a single primary, per rule M7. Is that correct? |
Abstract one primary per Rule M7. Follow the Lung Solid Tumor Rules to determine the number of primaries. The AJCC TNM manual is used for staging. Do not apply AJCC instructions to determine the number of primaries. |
2018 |
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20180110 | Solid Tumor Rules (2018)/Histology--Lung: What is the histology code of a 2018 lung case whose pathology states adenocarcinoma, acinar predominant? |
The Solid Tumor Rules for Lung rule H4 applies. Per Table 3, page 12, third column on adenocarcinoma row, adenocarcinoma, acinar predominant is coded to 8551/3. |
2018 | |
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20180069 | Solid Tumor Rules (2018)/Behavior--Brain and CNS: The Behavior coding instructions in the Non-Malignant Central Nervous System (CNS) Equivalent Terms and Definitions section refer to Table 1 for help coding behavior when the other priority order instructions do not apply; however, the behavior cannot be reasonably determined using Table 1 alone for all WHO Grade I neoplasms. Should an additional default, such as the ICD-O-3 or Tables 5 and 6, be used to determine behavior? See Discussion. |
Similar to an issue previously submitted SINQ 20180063, Table 1 (WHO Grades of Select CNS Neoplasms) in the Non-Malignant CNS Equivalent Terms and Definitions section states WHO Grade I tumors are always non-malignant. However, this does not mean that the tumors listed in Table 1 as WHO Grade I are always benign (/0). Some tumors listed with a WHO Grade I have a behavior of /1 (borderline) per the ICD-O-3 and/or Tables 5 and 6. The Behavior coding instructions do not currently indicate these are the appropriate sources to use when the pathologist and/or physician do not comment on the behavior of these tumors. In our area, pathologists do not explicitly state the behavior for these tumors; the pathologist only assigns the WHO Grade. |
There is no way for us to know what behavior to assign WHO grade II tumors when the pathologist does not provide that information. Defaulting to either benign or malignant is incorrect. Please follow back with the pathologist to determine behavior. The behavior must be non-malignant, meaning /0 or /1, or the tumor is a WHO Grade 1, to be reportable as non-malignant CNS tumor. Refer to Table Instructions under Table 1, WHO Grades of Select CNS Neoplasms that says to use non-malignant CNS rules for all WHO Grade 1 tumors and to use the appropriate rules for WHO Grade 2 tumors Use ICD-O and all updates if not listed in Table 6 according to non-malignant CNS Histology Rule H3 (for single tumor) and Rule H8 (for multiple tumors) when only one histology is present. |
2018 |
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20180064 | Solid Tumor Rules (2018)/Recurrence--Breast: Does any recurrence within the multiple primaries-stated timeframe count, not those just in the primary site? See Discussion. |
A patient has a left breast cancer diagnosed in 2011; then has a "recurrence" in her lymph nodes in 2017. In 2018, she has a new left breast mass that is the same histology and behavior as the 2011 cancer. Based on the 2017 "recurrence" in the lymph nodes, this is not a new breast primary, is that correct? |
This is a single primary using 2018 Breast Solid Tumor Rule M11. Rule M8 does not apply because the patient was not clinically disease free for 5 years. We are interpreting the 2017 diagnosis as lymph node metastasis from the 2011 breast cancer diagnosis. |
2018 |