[Cutaneous myiasis over tumor-lesions: presentation of three cases].

We report three cases of myiasis in patients with tumor-lesions. The first patient, a 54-year-old male, presented with laryngeal carcinoma with extensive local involvement, forming a large tumorous mass on the front of the neck that had been irradiated, where several active larvae were seen. The other two patients, females aged 101 and 87 years, respectively, presented with skin tumors on the scalp and face, and several active larvae could be seen in these tumors. After microbiological examination of the larvae removed, the species in the first case was identified as Chrysomya, while the species in the other two cases was Sarcophaga. Several risk factors for developing myiasis have been described, such as advanced age, poor hygiene, diabetes mellitus, venous insufficiency, etc. These manifestations are self-limited, but in most cases treatment is necessary. This consists of cleaning and mechanical removal of visible larvae, with or without occlusion methods.