A 65-year-old man presented with skin lesions six weeks after returning from a vacation in Belize at the beach and in the rain forest. What is the diagnosis?

Answer A. Bot flyExamination revealed five nodules of varying sizes with surrounding erythema and a central pore. The pores were occluded with petrolatum for two hours. After lidocaine was injected around the nodules, five Dermatobia hominis (bot fly) larvae at various developmental stages were extracted with the use of manual pressure and tweezers.