Clinical Research Directory

Inclusion Criteria: * Adult patients aged 18 years and older. * Patients with a pathologically or clinically confirmed diagnosis of cancer (solid or hematological malignancies). * Patients who were admitted to the Anesthesia Intensive Care Unit (ICU) between 2020 and 2025. * Patients with an ICU length of stay longer than 24 hours. * Patients with complete medical records, including baseline complete blood count (CBC) and Mean Platelet Volume (MPV) measured at the time of ICU admission. Exclusion Criteria: * Patients under the age of 18. * Patients who stayed in the intensive care unit for less than 24 hours. * Patients with missing or incomplete medical charts, laboratory data, or survival status records. * Patients who were readmitted to the ICU during the same hospital stay (only the first admission will be evaluated). * Patients who received massive blood or platelet transfusions immediately prior to the baseline laboratory measurement, which could artificially alter platelet parameters.