Collision tumor: two cancers coexist in same location

Doctors have identified cases where two distinct cancers develop in the same location in the human body, a phenomenon called collision tumor.

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The fact

This rare phenomenon raises medical questions about tumor development mechanisms and interactions between different cancer types.

Diagnosis and treatment of these hybrid tumors represent a major challenge for modern oncology.

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Auto-synthesis from 1 media source · identified on May 19, 2026