The association between TST induration and clinical outcome was ... clinical signs and symptoms, tuberculin skin tests (TSTs) or interferon gamma release assays, and radiographic findings.

tuberculosis. When injected, they provoke a delayed hypersensitivity reaction in individuals carrying the bacteria. The reaction manifests as thickening and hardening (induration) of the skin at ...

Induration refers to the hardening and thickening of the skin, making it firmer than normal. It may occur due to conditions that trigger inflammatory processes or infiltration of cancer cells.