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Small-cell lung cancer (SCLC) is a highly aggressive tumor with a high metastatic potential, particularly affecting current or former heavy smokers. Treatment typically involves chemotherapy, often combined with radiotherapy, and immunotherapy for extensive disease. Prophylactic cranial irradiation is recommended to reduce brain metastases. Elderly SCLC patients face unique challenges due to frailty and comorbidities, leading to increased risks of treatment-related toxicity and malnutrition. The prognostic nutritional index (PNI), a composite marker of nutritional and immune status, has shown promise in predicting outcomes in various malignancies. However, the optimal treatment approach for very elderly SCLC patients remains unclear, as they are often excluded from clinical trials. This study aimed to evaluate the survival outcomes of SCLC patients aged 75 years or older and their correlation with PNI. Retrospective cohort study. The study retrospectively analyzed data from 71 SCLC patients aged ≥75 years, focusing on age, gender, smoking status, chronic diseases, performance status, clinical stage, treatment modality, and pretreatment PNI. Survival estimates were calculated using the Kaplan–Meier method, and multivariate Cox regression analysis was performed to identify independent predictors of overall survival (OS). The results demonstrated that 26.8% of very elderly SCLC patients received no active treatment, resulting in a significantly shorter median survival time of 1.3 months. In contrast, patients who underwent aggressive treatment, such as palliative chemotherapy or chemotherapy plus radiotherapy, had significantly longer median survival times. Multivariate analysis revealed that receiving chemotherapy plus radiotherapy was associated with a significant survival benefit compared to no treatment. Furthermore, low PNI (≤40) was independently associated with decreased OS. This study highlights the importance of active treatment and nutritional support in improving survival outcomes for very elderly SCLC patients. The findings suggest that low PNI and lack of oncological treatment are associated with worse survival outcomes. Therefore, integrating nutritional assessment, interventions, and appropriate treatment strategies are crucial in managing lung cancer patients. Larger, multicenter studies are needed to validate these findings and explore potential interventions to optimize nutritional status and improve outcomes for elderly patients with SCLC.

the aging male

Survival outcomes and prognostic nutritional index in very elderly small-cell lung cancer patients: importance of active treatment and nutritional support