Reportability/Heme & Lymphoid Neoplasms--CNS: Is ALK-positive histiocytosis, primary site Central Nervous System (CNS), reportable, and is the correct histology code 9750/3? See Discussion.
2022 case: Surgical Pathology Report-spinal cord tumor, biopsies: ALK-positive neoplasm most consistent with ALK-positive histiocytosis.
Report this 2022 case of ALK-positive histiocytosis using histology code 9751/3, Langerhans cell histiocytosis, disseminated. Use text fields to document that this is a case of ALK-positive histiocytosis. This term may be assigned a new code once the 5th edition of the Hematopoietic WHO Blue Book is released.
First Course Treatment/Neoadjuvant Therapy--Melanoma: How are the three Neoadjuvant Therapy data items (Neoadjuvant Therapy, Neoadjuvant Therapy--Clinical Response, Neoadjuvant Therapy--Treatment Effect) coded when a patient is diagnosed with melanoma in the lymph nodes with no primary skin site identified? The physician gives immunotherapy as neoadjuvant therapy with planned and carried out surgical resection of involved lymph nodes following completion of immunotherapy. There is no "planned definitive surgical resection of the primary site" as no primary site was found,
Assign code 0 to each of the three Neoadjuvant Therapy data items in this situation.
We will add an example to the coding instructions for these data items in the next release of the manual.
Histology--Thyroid: What is the correct histology code for a thyroid resection showing papillary carcinoma, tall cell variant with oncocytic features with 30% of largest tumor (right) is tall cell variant and both foci contain benign multinucleated giant cells? See Discussion.
There is an ICD-O histology code for papillary carcinoma, tall cell (8344/3) as well as papillary carcinoma, oxyphilic cell (8342/3). Per SINQ 20150045, the term oncocytic is synonymous with oxyphilic in this context.
The term “variant” can be used for the Other Sites (non-updated STR sites) primaries when the ICD-O-3.2 (or ICD-O-3 for older cases) includes the term “variant” in the histology name. The MPH General Instructions did not include the term “variant” as a term that can be used to code histology.
Code papillary carcinoma, tall cell variant with oncocytic features to papillary carcinoma, tall cell (C73.9) (8344/3). The WHO Classification of Endocrine Organs states that this variant is composed of cells that are as tall as they are wide, and show abundant eosinophilic (oncocytic-like) cytoplasm. Tall cells must account for greater than or equal to 30% of all tumor cells.
Reportability/Histology--Testis: Is micropapillary serous borderline tumor reportable? Pathology states Testis (C621) radical orchiectomy: Micropapillary serous borderline tumor.
We consulted an expert genitourinary pathologist who advises that micropapillary serous borderline tumor of the testis is reportable. He states "it is the same neoplasm as in the ovary. It arises from tissue (tunica vaginalis) surrounding the testis so is a paratesticular neoplasm."
Please note: not all borderline tumors are reportable and this diagnosis is an exception because it is assigned /2 in ICD-O-3.2. It is reportable for cases diagnosed Jan 1, 2021 and later.
Reportability--Ambiguous Terminology: Can the term “at most” preceding a statement of a reportable diagnosis be used to accession a case? See Discussion.
A January 2022 endometrium biopsy and curettage both show final diagnosis of “mild cytologic atypia and glandular crowding, at most endometrioid intraepithelial neoplasia.” Any subsequent surgery path is unlikely to provide clarification.
Do not report the case in this scenario based on the diagnosis alone of mild cytologic atypia and glandular crowding, at most endometrioid intraepithelial neoplasia. "At most" is not an ambiguous term for reportability. It appears that "at most" in this case refers to the worst possible option within other possible options (differential diagnosis). Differential diagnoses are "educated guesses" or hypotheses and are usually not reportable unless proven otherwise. As there is no clear statement of the diagnosis in this case, we recommend that you seek additional information, for example, clinical diagnosis, treatment, and patient care.
Solid Tumor Rules (2022)/Histology--Bladder: Can the term configuration be used to code the more specific histology for bladder primaries diagnosed 2022 and later? See Discussion.
In the September 2021 Urinary Sites Solid Tumor Rules update, the term configuration was removed from the “DO NOT CODE histology when described as” list. However, it was not added as a term that can be used to code the more specific histology for urinary tumors.
Can configuration be used to code the more specific histology 8130 (papillary urothelial carcinoma) when the diagnosis is urothelial carcinoma, tumor configuration: papillary?
Beginning with cases diagnosed 1/1/2022, the term "configuration" can be used to code histology for urinary sites only. At the request of the AJCC urinary experts, the instructions were changed to allow configuration to be used to code histology.
Tumor Size--Pathologic--Anus: In 2019, the pathology report of an anal canal squamous cell carcinoma stated the tumor size is 2.5 cm from proximal to distal (3.5 cm in circumference). Is the pathologic tumor size tumor size 025 or 035?
Based on the information provided, code the tumor size as 035. We asked an expert pathologist to review this question and she said to use the larger measurement. She also said "the pathologist usually cuts the anus and rectum open like a tube; the “circumference” would be measured flat."
Solid Tumor Rules (2018/2021)/Histology--Head & Neck: What is the histology code for a uvula (C052) primary with histology of squamous cell carcinoma, conventional (keratinizing) and p16 result is negative? See Discussion.
The Schema ID for C051 (soft palate, NOS) and C052 (uvula) is Oropharynx (either 00100 or 00111 depending on p16). The Solid Tumor Rules Manual includes these site codes are under Table 4: Tumors of Oral Cavity and Mobile Tongue site group for histology coding. We are aware of the notes that allow coding of 8086 for keratinizing SCC, HPV-negative for sites listed in Table 5 only. However, it seems like C051 and C052 were incorrectly omitted from Table 5 (mis-categorized under Table 4). Can we code 8085 for 8086 for C051 or C052 based on p16/HPV status?
Assign code 8071/3 for keratinizing squamous cell carcinoma. Codes 8085 and 8086 are only valid for the Head and Neck sites listed in Table 5 beginning with cases diagnosed 01/01/2022 and forward.
First Course Treatment/Immunotherapy--Other Therapy: Should IMC-A12 (Cixutumumab) be coded as Immunotherapy/Biological Response Modifier (BRM) treatment? See Discussion.
IMC-A12 (Cixutumumab) is listed as a BRM agent in SEER*Rx, but the Remarks section indicates it should be coded as Other Therapy until there is FDA approval. It is unclear if FDA approval was ever given for this agent. We are mainly seeing it given for prostate primaries.
Code Cixutumumab as Other Therapy. Cixutumumab is still in clinical trials and not approved by FDA yet. Though it is classified as an immunotherapy agent, it is not approved.
Update to Current Manual/Residence at diagnosis: Would an exchange student be a temporary resident of the SEER area or a non-resident? See Discussion.
A 17 year old exchange student was brought into the hospital with appendicitis. The patient had an appendectomy; there was no follow up treatment. 5/27/2006 pathology report of vermiform appendix: Adenocarcinoid appendix <5 mm tumor limited to appendix.
The patient has no record in Lexis Nexus and no social security number. The address is a post office box; additionally, the patient’s birthplace is Switzerland and is lost to follow up.
Code the residence where the student is living for exchange students temporarily living in the U.S. Code the temporary address if known or the Post Office Box if unknown. We will add this scenario to the next release of the SEER manual.
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