Long-term complete response to carboplatin plus paclitaxel combined with bevacizumab in a patient with metastatic spindle cell carcinoma

We report the case of a 62-year-old Japanese male with metastatic spindle cell carcinoma (SpCC) who showed a long-term complete response (CR) to bevacizumab combination chemotherapy. We performed chemotherapy with carboplatin (AUC 6, day 1) plus paclitaxel (200 mg/m2, day 1) plus bevacizumab (15 mg/kg, day 1) for four cycles. After the chemotherapy, CT imaging demonstrated a CR. We subsequently administered bevacizumab (15 mg/kg) repeated every 3 weeks as maintenance therapy for 12 cycles. The patient discontinued maintenance chemotherapy because of grade 3 proteinuria, but the anti-tumor effect of CR was maintained at 35 months after the discontinuation of chemotherapy.