A case of imported furuncular cutaneous myiasis and cytochrome oxidase Ⅰ gene sequence analysis of the pathogenic Cordylobia anthropophaga / 中华皮肤科杂志

To report a case of imported furuncular cutaneous myiasis,and to analyze the sequence of the mitochondrial cytochrome C oxidase subunit Ⅰ (CO Ⅰ) gene of the pathogenic Cordylobia anthropophaga.A 33-year-old female patient had a travel history to Ghana and Cameroon in Africa 1 month prior to the presentation.No anti-mosquito measures were taken during her stay,and she hung up the laundries outside to dry for several times.Skin examination showed furuncular protuberances with diameters of 1-2 cm on the inner side of the left upper arm as well as on the outer side of the left chest,which were bright red and hard on palpation with irregular borders and a small hole on their central surface.Morphological identification revealed that the larva squeezed from the lesion was suspected as myiasis.After PCR amplification of the CO Ⅰ gene of the larva,an about 650-bp PCR product was acquired.Sequencing and BLAST analysis showed that this product was most closely related to the CO Ⅰ gene (GenBank accession number:FR719158.1) of Cordylobia anthropophaga isolated in Cameroon in 2010 with the sequence similarity being 99.84％,and they were grouped together on the phylogenetic tree.According to the clinical features and travel history of the patient and the sequencing results of the pathogenic Cordylobia anthropophaga,this case was confirmed as imported furuncular cutaneous myiasis caused by Cordylobia anthropophaga.

Miasis cutánea en un anciano de una comunidad rural ecuatoriana / Cutaneous myiasis in an elderly from an ecuatorian rural community

Se describe el caso clínico de un anciano de 70 años de edad que acudió al Centro de Salud Ramón Campaña del distrito Pangua, en la Provincia de Cotopaxi, Ecuador, por presentar dolor intenso en la región dorsal izquierda, un abultamiento con sensación de que algo le comía hacia dentro y malestar general. En el examen físico se detectó un forúnculo de 6-7 cm de diámetro en la zona escapular izquierda, de aspecto eritematoso-edematoso, caliente y doloroso a la palpación, con un orificio central ulcerado donde se observaba una larva. Se diagnosticó una miasis cutánea, se extrajo la larva y se indicó desinfección local, antiinflamatorios y antibioticoterapia

The case report of a 70 years elderly is described. He went to Ramón Campaña Health Center in Pangua district, Cotopaxi, Ecuador due to an acute pain in the left dorsal region, a bulging with the feeling that something was eating him from inside and diffuse discomfort. In the physical examination, a 6-7 cm diameter furuncle was detected in the left scapular zone, with erythematosus-edematosus look, hot and painful when touched, with an ulcerated central hole where a larva was observed. A cutaneous myiasis was diagnosed, the larva was removed and local disinfection, antinflammatory drugs and antibiotic therapy were indicated

Serie parasitosis en dermatología. Miasis: diferentes formas de presentación clínica / Parasitic series in dermatology. Myiasis: different forms of clinical presentation

La miasis es una infestación por larvas en desarrollo de una gran variedad de moscas del orden Díptera. Según el sitio de invasión, se clasifica en miasis cavitarias, que pueden deberse a invasión de cavidades naturales o de heridas, y miasis forunculoide, cuando atraviesa piel indemne. Esta infestación presenta una distribución mundial, con variaciones estacionales en relación con la latitud geográfica y el ciclo de vida de distintas especies de moscas. Presentamos una serie de tres casos de pacientes con distintas formas clínicas de manifestación de miasis. (AU)

Myiasis is the tissue infestation by a variety of Diptera order larvae flies. According to the invasion site, they are classified in myiasis of cavities, which can be because of an invasion of natural cavities or wounds, and furuncular myiasis, when they invade through intact skin. This infestation has a worldwide distribution, with seasonal variations in relation to the geographic latitude and the life cycle of different species of flies. We present three cases of patients with different clinical forms of presentation of myiasis. (AU)

A Case of Furuncular Cutaneous Myiasis after Traveling to Cameroon / 대한피부과학회지

Myiasis is defined as an infestation of live human and vertebrate animals with dipterous larvae, which at least for a period, feed on dead or living tissue of the host, liquid body substances or ingested food. Among several types of myiasis, cutaneous myiasis is classified as the most common type. Cutaneous myiasis is subdivided into furuncular, migratory and wound myiasis based on the infested morphology. Common dipterous larvae for furuncular myiasis include Dermatobia hominis, Cordylobia anthropophaga, Cuterebra spp., Wohlfahrtia vigil and W. opaca. Early lesions resemble other insect bite reactions, but the physician can differentiate the lesions by the visualization of larvae through an aperture with serous exudes as the larvae grow. Although cutaneous myiasis is not uncommon in endemic areas, there has been one previous report of cutaneous myiasis by C. anthropophaga in the Korean dermatological literature. We report here an interesting case of furuncular cutaneous myiasis by C. anthropophaga in a patient after traveling to Cameroon.