This data item is used to identify cases with multiple tumors that are abstracted and reported as a single primary using the SEER, IARC, or Canadian Cancer Registry multiple primary rules. Multiple tumors may individually exhibit in situ, invasive, or any combination of in situ and invasive behaviors. Multiple intracranial and central nervous system tumors may individually exhibit benign, borderline, malignant, or any combination of these behaviors. Multiple tumors found in the same organ or in a single primary site may occur at the time of initial diagnosis or within one year of the initial diagnosis. The data item does not apply to metastatic tumors. Data will be collected at the time of initial case abstract or within one year of the initial diagnosis. This data item is also used when a physician states that there are two or more primaries, but for surveillance purposes, the case is reported as a single primary. Patients with multiple tumors that are currently reported as a single primary for surveillance purposes may have a worse prognosis or more extensive treatment than patients with a single tumor. This data item will make it possible to identify important information about these cases for data analysis. Data collected under this item will be used to assess the number, type, and anatomic location of multiple tumors currently abstracted as a single primary using the SEER, IARC, or Canadian Cancer Registry rules for determining multiple primary cancers and the impact of these cases on cancer case counts and incidence rates. Data will also serve as a basis for measuring the impact and feasibility of future modifications to the multiple primary rules. This data item will make it possible to compare individually reported cancer cases with historical data if the rules are changed. .. NAACCR Data Standards and Data Dictionary Version 11
status
ACTIVE
Fully-Specified Name
component
Multiple tumors reported as single primary
property
Prid = Presence or identity: Prid stands for “Presence or identity”, is used for assays that detect whether or not an analyte of a particular kind is present, and if it is, to identify the specific analyte.
time
Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
system
Cancer.XXX
scale
Nom = Nominal: Nominal or categorical responses that do not have a natural ordering. (e.g., names of bacteria, reported as answers, categories of appearance that do not have a natural ordering, such as, yellow, clear, bloody.
method
Additional Names
short name
Arterial Stenosis; CA; Identity or presence; Misc; Miscellaneous; Mult; Mult Tum Rpt as One Prim; Multi; Nominal; Oncology; Other; Point in time; Random; Spec; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); Unspecified
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