, the human botfly, is native to South and Central America with cases of infestation seen in travelers to these areas. Myiasis is the cutaneous manifestation of larvae between two periods of molting (instar) and presents as a firm furuncular mass with a central pore that can be easily clinically overlooked. Ultrasound is useful in the diagnostic workup and has specific features and techniques to demonstrate live larva. We present a patient who acquired cutaneous furuncular myiasis caused by , the human botfly, during her jungle trek in the Amazon forests in South America. Over 5 weeks, she developed a firm furuncular lesion with a central pore. Ultrasound revealed a hypoechoic mass with a hyperechoic oblong-shaped core that showed a fluid circulation, confirming the presence of a viable larva. Surgery was performed and a second-instar larva was confirmed. We discuss the key ultrasound findings and management of cutaneous furuncular myiasis with the aim of raising awareness of this condition, adding to the growing body of literature likely associated with the re-opening of global travel routes.
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http://dx.doi.org/10.1055/s-0042-1758203 | DOI Listing |
Cureus
November 2024
Emergency Medicine, Memorial Healthcare System, Hollywood, USA.
Furuncular myiasis is a parasitic disease caused by the larvae of , or the human botfly, which burrow under the skin causing cystic lesions to develop. A six-year-old boy presented with multiple scalp lesions. The mother reported travel to Ecuador one month prior.
View Article and Find Full Text PDFJ Med Entomol
December 2024
College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA.
An aberrant bot fly specimen was removed from the scalp of a patient 3 wk after returning from Belize. The specimen showed little resemblance to the typical human bot fly larva, Dermatobia hominis, prompting a molecular identification using cytochrome oxidase I and II (COI and COII, respectively) mitochondrial DNA sequence regions. A BLAST search was subsequently performed, and both our COI and COII amplicon sequences showed 99-100% match with Dermatobia hominis, despite the specimen's clearly aberrant morphology.
View Article and Find Full Text PDFRev Bras Parasitol Vet
September 2024
Departamento de Medicina e Cirurgia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, RJ, Brasil.
J Clin Med
September 2024
Division of Plastic Surgery, Mayo Clinic, 4500 San Pablo Rd., Jacksonville, FL 32224, USA.
Background: Human myiasis, the infestation of tissues by dipterous larvae, commonly manifests as painful, raised skin lesions, particularly in tropical regions such as Latin America, where (the human botfly) is a frequent cause. With increased international travel, cases of travel-related myiasis have become more prevalent, necessitating awareness among healthcare providers in non-endemic regions.
Methods: We present a case of cutaneous myiasis in a 69-year-old male who returned to the United States from Belize.
Vet Parasitol Reg Stud Reports
August 2024
Clinica Veterinaria Vet Center, Bucaramanga, Colombia.
Furuncular myiasis due to Dermatobia hominis is the second most common skin diseases in dogs that live in tropical climates in Central and South America, causing discomfort and injuring in the connective tissue of the affected dog. Therefore, the objective of the study was to evaluate the effectiveness of Afoxolaner (Nexgard®) in the treatment of canine furuncular myiasis. Twenty-five dogs naturally infested with D.
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