Effective management of lung spindle cell carcinoma with ipilimumab, nivolumab, carboplatin, and paclitaxel, demonstrating efficacy in brain metastases treatment.

A 76-year-old woman with cT1bN2M1b stage IVA spindle cell carcinoma of the right lower lobe of the lung, no driver gene mutation, and programmed death ligand 1 < 1%, was started on ipilimumab+nivolumab+carboplatin+paclitaxel. After two courses, the patient initiated maintenance therapy with ipilimumab+nivolumab. New multiple brain metastases were observed during treatment but resolved with continued treatment.