| http://www.w3.org/ns/prov#value | - In most cases, the primary tumor mass is identified by the presence of a cyst, which can be found through visual or palpation methods, or by irregularity in shape, texture or weight of the tissue. [0110] In the case of external surface cancers (i.e., those that involve external surfaces such as the skin and mucosa), such tumor masses most probably are visually apparent and may not be diagnosed thr
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