SEER Inquiry System - Search

Reportability--Skin: Is malignant proliferative trichilemmal tumor (PTT) reportable, and if so, do we apply the matrix rule and code it to 8103/3? A literature search reveals these do exist, but are extremely rare.

Reportability/Ambiguous Terminology--Brain and CNS: Is the expression differential considerations a synonym for differential diagnoses? See Discussion.

Solid Tumor Rules (2018)/Histology--Breast: How should histology be coded for 2020 breast lumpectomy final diagnosis of invasive ductal carcinoma? Summary Cancer Data and CAP Summary states: Invasive carcinoma with the following features: Histologic type: Tubular adenocarcinoma. See Discussion.

Solid Tumor Rules (2018)/Multiple primaries--Breast: How many primary tumors should be abstracted for a 2018 breast excision with a final diagnosis of invasive mucinous adenocarcinoma (0.7 cm) with ductal carcinoma in situ (DCIS) present as discontinuous foci, spanning 12 cm? See Discussion.

Date of Diagnosis--Brain and CNS: How is the Date of Diagnosis coded when an MRI clinically diagnoses a borderline brain tumor on 4/4/2020, but the subsequent biopsy pathologically diagnoses a malignant brain tumor on 5/20/2020? See Discussion.

Histology/Behavior--Breast: How are histology and behavior coded for a case originally diagnosed as in situ and later an invasive tumor with a different histology is diagnosed but still a single primary using Breast Solid Tumor Rule M10? See Discussion.

Solid Tumor Rules/Multiple primaries--Lung: How many primaries should be accessioned for the following patient scenario?

1) 09/2014 Left upper lobe (LUL), unifocal, localized acinar adenocarcinoma (8550/3) treated with lobectomy.

2) 04/2016 Right lower lobe (RLL), unifocal, localized acinar adenocarcinoma (8550/3) treated with wedge resection.

3) 04/2019 (within 3 years, but masked full date) Left lower lobe (LLL), unifocal, non-small cell carcinoma (8046/3) with brain metastasis. See Discussion.

Systemic/Surgery Sequence: The note associated with code 4 in Systemic Treatment/Surgery Sequence in the 2018 SEER Manual says: Code 4 is intended for situations with at least two episodes or courses of systemic therapy. Does this mean two different types of systemic therapy before and after surgery? See Discussion.

EOD 2018/EOD Primary Tumor/EOD Mets--Lung: Is EOD Primary Tumor coded to 500 and EOD Mets 10 when there are bilateral lung nodules with nodules in same lobe as the primary tumor? How is EOD Primary Tumor coded when separate tumor nodes are in an ipsilateral lung but there is no documentation as to whether it is in the same or different ipsilateral lobe from the primary tumor?

Reportability--Ambiguous Terminology: Should either of the terms, strongly characteristic of or most certainly, be used to accession a case as reportable when they are used to describe a malignancy and no other information is available? See Discussion.