ascopubs.org: Treatment of Cabozantinib-Related Palmar-Plantar Erythrodysesthesia With Topical Sildenafil, Diclofenac, and Gabapentin Cream: A Case Report Treatment of Cabozantinib-Related Palmar-Plantar Erythrodysesthesia With Topical Sildenafil, Diclofenac, and Gabapentin Cream: A Case Report