t1B

T1B is an alphanumeric designation used across different fields to label a specific subtype within a broader category labeled T1. The exact meaning of T1B depends on the context in which it is used, and there is no universal definition that applies to all disciplines.

In medical oncology, T1B refers to a subclass of the primary-tumor category in the TNM cancer staging system. The letter T denotes the primary tumor, and the number 1 indicates a small or limited tumor. The appended B designates a further subdivision within T1. Precise criteria for T1B vary by cancer site, and some cancers may use subcategories such as T1a, T1b, and T1c to reflect differences in size or invasion. Clinically, T1B is used together with the N (lymph nodes) and M (metastasis) components to stage disease, guide treatment decisions, and inform prognosis.

Outside medicine, T1B is commonly used as a model, variant, or dataset code in industries such as technology, automotive, and consumer electronics. In these contexts, the letters and numbers may indicate revision level, feature set, or compatibility, and the exact definition is determined by the organization that assigns the code. Because there is no universal standard, it is important to consult official specifications or organizational documentation for the precise meaning of T1B in a given setting.

Notes: notation can appear as T1B, T1-B, or T1b depending on the source. Related terms include T1 and its other subcategories (such as T1a or T1c) in contexts where such distinctions exist.