Miasis por Cochliomyia hominivorax en la Argentina / Myiasis by Cochliomyia hominivorax in Argentina

Miasis es la infestación de humanos y animales por larvas de dípteros ciclorrafos con invasión y destrucción tisular. Cochliomyia hominivorax es responsable del 80% de las miasis en la Argentina. Es importante realizar el diagnóstico etiológico específico debido a la agresividad de las larvas de esta especie, las que pueden provocar cuadros clínicos graves. Presentamos cuatro casos de miasis por C. hominivorax. Dos de los pacientes residían en la ciudad de Buenos Aires y trabajan en zona rural, y los otros dos residían en el Gran Buenos Aires.

Miasis is the infestation of man and animals by larvae of flies belonging to the order Diptera, suborder Cyclorrapha. Eighty percent of miasis in Argentina is caused by Cochliomyia hominivorax, a species that induces pronounced tissue invasion and destruction, and results in severe clinical forms. Because of the aggressiveness of its larvae, it is important to reach a specific etiological diagnosis. We present four cases of miasis by C. hominivorax in two patients living in the city of Buenos Aires but working in a rural area and two patients living in the Greater Buenos Aires.

Oftalmomiíase externa / External ophthalmomyiasis

RESUMO O objetivo deste resumo é relatar um caso de portador de oftalmomiíase externa, discorrendo sobre o quadro clínico, os diagnósticos diferenciais e as opções de tratamento. As informações foram obtidas por meio de revisão do prontuário, entrevista com o paciente e registro fotográfico dos métodos diagnósticos e terapêuticos aos quais o paciente foi submetido. Dados foram analisados junto a uma extensa revisão da literatura. O nosso artigo relata um caso de um paciente que foi inicialmente diagnosticado e tratado como celulite pré -septal e após avaliação de especialista em oculoplástica foi realizado o diagnóstico e tratamento adequado para oftalmomiíase. Também revela a importância deste diagnóstico, infrequente nos grandes centros urbanos, seu tratamento e evolução.

ABSTRACT The purpose of this report is to describe a case of external ophthalmomyiasis, discussing the clinical picture, differential diagnoses and treatment options. The information was obtained by means of a review of the medical record, an interview with the patient and a photographic record of the diagnostic and therapeutic methods to which the patient was submitted. Data were analyzed together with an extensive review of the literature. Our article reports a case of a patient who was initially diagnosed and treated for pre-septal cellulitis and after evaluation by a specialist in oculoplastics, the diagnosis and appropriate treatment for ophthalmomyiasis was performed. It also reveals the importance of this diagnosis, infrequent in large urban centers, its treatment and evolution.

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)

Miasis cutánea por Cochliomyia hominivorax asociada a dermatitis seborreica: case report / Cutaneous myiasis due to Cochliomyia hominivorax associated with seborrheic dermatitis

Myiasis is an infestation of tissues and organs of humans and animals by Diptera larvae (flies, horseflies, mosquitoes). They are located at different body sites, and classified clinically as cutaneous, visceral and cavitary. We report a 26-year-old woman with a history of seborrheic dermatitis and recent trip to Brazil. She presented with a seven days history of suppurating wounds in the parieto-occipital area of the scalp. At physical examination we found three ulcers of approximately 1.5 cm each, with multiple mobile larvae inside. The obtained larvae were analyzed, identifying Cochliomyia hominivorax larvae at L2 and L3 stages. The patient was managed successfully with oral antimicrobials and local cleansing. The screwworm Cochliomyia hominivorax in our country is rare. Known risk factors are wounds, poor personal hygiene, extreme ages, psychiatric disorders, presence of specific dermatosis such as psoriasis and seborrheic dermatitis, among others.

Myiasis associated with an invasive ductal carcinoma of the left breast: case study

ABSTRACT Most breast cancers originate in the ductal epithelium and are referred to as invasive ductal carcinoma. In this study we report on the clinical procedures adopted to diagnose myiasis in association with infiltrating metastatic breast carcinoma in a female patient. A 41 years old woman came to the Federal Hospital of Andaraí complaining of intense itching, warmth, redness and hardening of the breast, which had acquired the aspect of an orange peel. A lesion in the left breast was cavitated, dimpled, had fetid odor, and had fibrotic and infected air nodules filled with exudate and Dipteran larvae. The tissue was cleaned and 33 larvae were extracted. The patient was hospitalized and received Ivermectin. Eighteen of the larvae extracted from the patient were placed in 70% alcohol, and twelve were placed in a container with sterile wood shavings under controlled conditions until they metamorphosed into adults. The taxonomic identification of the flies revealed that the culprit was Cochliomyia hominivorax. A histopathological exam conducted three months earlier had revealed infiltrating ductal carcinoma. Two months after the myiasis treatment, the breast tissue had healed. The patient had waited ten days from the onset of the myiasis to seek treatment, and that delay interfered negatively in the prognosis of both the neoplasm and the myiasis. This study is relevant to public health in view of the strong social impact of myiasis.

Oral myiasis: a case series of 11 patients treated at Khyber College of Dentistry Hospital, Peshawar

In order to determine the clinical presentation and management f 11 patients suffering from Oral myiasis a descriptive case series study was carried out at Khyber College of Dentistry, Peshawar, from June 2008 to December 2011. 11 patients of Oral Myiasis reported over a time period of 5 years. Thorough history was taken from each patient followed by complete clinical examination, relevant radiographs were advised where necessary. Surgical debridement was carried out followed by larvae removal with the help of maggot oil. Two patients were advised systemic therapy with Ivermectin. Mean age of the patient at the time of presentation was 39.72 years SD + 21.5. Majority of patients were males [64%]. Anterior maxilla was found to be the predominant site. Head and neck malignancies were found to be the most common cause of Myiasis. Thus Oral myiasis is a rare but serious condition, involving necrotic and suppurative wounds in patients with deranged systemic conditions. Treatment includes cleaning, debridement, removal of larvae and systemic therapy with Ivermectin

Ivermectin treatment for massive orbital myiasis in an empty socket with concomitant scalp pediculosis.

We report a rare case of massive orbital myiasis following recent lid injury, occurring in the empty socket of an elderly lady, who had concurrent scalp pediculosis. The orbital myiasis was effectively treated with the broad-spectrum antiparasitic agent, ivermectin, thus precluding the need for an exploratory surgery. Ivermectin was also effective in managing the concurrent scalp pediculosis.

Flies blown disease - Oral myiasis.

Myiasis, a term first introduced by Hope (1840), refers to the invasion of tissues and organs of animals and human wounds and certain body cavities by the dipteran larvae which manifests as subcutaneous furunculoid or boillike lesions. Oral myiasis is a rare pathology and a risk to the patient's life. Higher incidence is seen in rural areas affecting the tropical and sub-tropical zones of Africa and America. Myiasis affecting the oro-dental complex is rare. Here is a case report of oral myiasis in an 18-year-old male patient who is mentally challenged with anterior open bite, incompetent lips, and periodontal disease. The lesion was treated with turpentine oil, which forced larvae out and irrigated with normal saline solution. Follow-up examination revealed complete remission and healing of the lesion.

Primer reporte en Cuba de miasis intestinal por Hermetia illucens (Diptera: Stratiomyidae) / First report of intestinal myiasis caused by por Hermetia illucens (Diptera: Stratiomyidae)

INTRODUCCIÓN: Hermetia illucens, díptero de la familia Stratiomyidae es una especie reportada para Cuba relativamente frecuente en todo el territorio nacional. Ha sido incriminada como productora de miasis en humanos y animales. OBJETIVO: reportar por primera vez en Cuba una miasis entérica producida por esta especie. MÉTODOS: la paciente, una mujer blanca de 26 años presentó un cuadro de deyecciones líquidas posprandiales con cólicos abdominales. Al ingerir una infusión de plantas medicinales a partir de incienso (Artemisa abrotanum L.), hierba buena (Mentha nemorosa Willd.) y manzanilla (Matricaria chamomilla L.) expulsó 5 larvas (2 grandes y 3 pequeñas). Se decidió su ingreso durante una semana pero no se obtuvieron nuevas larvas, una gastroscopia realizada mostró gastritis antral crónica con focos de agudización; se determinaron otras parasitosis por lo que se le indicó mebendazol. RESULTADOS: de las larvas expulsadas una fue llevada al Departamento de Entomología Médica del Instituto de Medicina Tropical Pedro Kourí, donde fue determinada taxonómicamente como Hermetia illucens. CONCLUSIONES: este reporte junto a lo conocido en la literatura mundial muestra la posibilidad de que miasis por esta especie ocurran con cierta frecuencia, sobre todo en los meses de verano al ingerir frutas muy maduras y sin lavar; se deberá alertar a los médicos de esta posible miasis a ocurrir, promocionar las medidas higiénicas a ser tomadas al ingerir frutas y valorar el estudio de las propiedades antiparasitarias de la especie Artemisa abrotanum L.

INTRODUCTION: Hermetia illucens from Stratiomyidae family is a relatively frequent species reported in Cuba. It has been accused of causing myiasis in humans and animals. OBJECTIVE: to report for the first time in Cuba, the occurrence of intestinal myiasis caused by this species. METHODS: the patient, a white woman aged 26 years presented with a picture of postprandial fluid discharges accompanied by abdominal pain. When the patient took an infusion of medicinal plants such as incense (Artemisa abrotanum L.), mint (Mentha nemorosa Wild) and camomile (Matricaria chamomilla L.), five larvae were ejected (2 large and 3 small). It was decided to admit the patient to the hospital for a week, but not more larvae were ejected. A gastroscopy showed antral chronic gastritis with acute foci and also other types of parasitosis, so Mebendazol was prescribed. RESULTS: one of the ejected larvae was taken to the Medical Entomology Department of Pedro Kourí Institute of Tropical Medicine where it was taxonomically identified as Hermetia illucens. CONCLUSIONS: this report together with the pieces of knowledge provided by the world literature show the possibility that myasis caused by this species may occur in summer months when ripe unwashed fruits are consumed; physicians should be warned about this possible myiasis, hygienic measures should be applied when taking fruits and the study of antiparasitic properties of Artemisa abrotanum L. must be assessed.

Avaliação do tratamento de miíases em cães através da utilização do nitenpyram / Evaluation of myiasis treatment in dogs using nitenpyram

As miíases são um importante fator complicante das lesões cutâneas, e por apresentarem elevada incidência no estado doRio de Janeiro objetivou-se testar uma nova droga no tratamento desta parasitose. O nitenpyram, droga utilizada comoadulticida para pulgas, foi administrado a 27 cães que apresentavam miíases, com diferentes graus de parasitismo e faseslarvares. A droga mostrou-se eficaz e prática, uma vez que a administração é oral e dispensa a retirada manual das larvas. Nãoforam observados quaisquer efeitos colaterais nos cães. Os animais apresentaram uma cicatrização rápida das lesões.

Myiasis are an important complicative factor of skin lesions, since they present high incidence at Rio de Janeiro State, it hasbeen intended to test the nitenpyram in the treatment of this parasitosis. The nitenpyram, drug used as adulticide for fleas, wastested in 27 dogs that presented myiasis, in different degrees of parasitism and worm ages. The drug showed itself efficient andpractical, without any side effects, once its administration is oral and dispenses the manual collect of worms. The animals havepresented a fast healing of lesions.

Human myiasis in western Jamaica: five years after the implementation of a screwworm eradication programme

OBJECTIVE: To determine the distribution of cases of human myiasis admitted to the Cornwall Regional Hospital (CRH), Jamaica, between 1999 and 2003, following the inception of the National Screwworm Eradication Programme (NSEP) in 1998, and the risk factors associated with the condition. METHOD: A total of 144 cases of myiasis were retrieved from the database of the department of Medical Records at the CRH for the years 1999 to 2003. A data extraction form was devised to review the circumstances of each case. The data were analyzed using EpiInfo version 6. RESULTS: Of 144 cases, 54.9% were female and 45.1% male. The largest groups were < 10 years, 52.8% [76/144 (M-21, F-55)] and 60years and over, 18.8% [27/144 (M-16, F-I)] (p < 0.001). Case distribution for the years 1999-2003 showed 16, 39, 31, 30, and 28 cases respectively. Three-quarters (74.6%) of all cases affected the scalp/head one-fifth (20.3%) affected the lower limbs. Ninety-six per cent of those < 10 years had scalp/head myiasis (p < 0.001; OR = 23.29; CI: 6.14 < OR < 104.11). Two-thirds (66.6%) of those 60 years and over had lower limb myiasis (p < 0.001; OR = 19.09; CI: 6.20 < OR < 61.12). Mean duration of treatment was 3.5 days (SD = 1.4 days) and 69.7% required hospitalization for seven or more days. There was no difference in duration of treatment for myiasis or in length of hospitalization in relation to method used to eliminate maggots. Risk factors identified included Tinea capitis for myiasis of the scalp/head (p < 0.001) and diabetes mellitus for lower limb myiasis (p < 0.001; OR = 14.48; CI: 2.37 < OR < 133.25). CONCLUSION: Human myiasis remains a public health issue in western Jamaica with no significant decreasing trend in the number of cases admitted to the CRH since 1999. It is recommended that this zoonosis become a Class 1 notifiable disease to the Ministries of Health and Agriculture because of the existing NSEP.

Ivermectina no tratamento de miíase orbitária: relato de caso / Ivermectine in the treatment of orbital myiasis: case report

OBJETIVO: Relatar um caso de miíase associada a carcinoma basocelular de órbita, tratada com ivermectina previamente ao ato cirúrgico. MÉTODOS: Apresentamos um caso e enfatizamos a eficácia da ivermectina no tratamento da miíase como terapêutica alternativa. RESULTADO: Após o tratamento com ivermectina via oral em dose única, observou-se a resoluçäo completa do quadro de miíase num período de 48 horas. CONCLUSÄO: A ivermectina pode ser utilizada com eficácia no tratamento da miíase orbitária, tornado desnecessária a remoçäo mecânica das larvas

efficacy of the volatile oils of three plants for controlling lucilia sericata

Myiasis is one of the most important parasitic diseases, which affects the human welfare. The volatile oils of 3 plants were tested against adult Lucilia sericata. The LC50 was 80 ppm by Anethum graveolens, 180 ppm by Conyza dioscoridis and 130 ppm by Mentha microphylla. The slope functions were 1.9, 1.79, and 2.2, respectively. The whole results discussed

Miíase órbito-maxilo-bucal: relato de um caso / Orbital-maxillobucal myiasis: report of a case

Os autores apresentam um caso de oftalmomiíase com fístula orbito-maxilo-bucal por larvas da espécie Dermatobia hominis. O tratamento clínico foi realizado com éter sulfúrico, para retirada das larvas, curativos com óxido amarelo de mercúrio 1 por cento e medicação sistêmica que incluía antibiótico e antiinflamatório via oral. Apesar da resolução satisfatória com involução espontânea da fístula, foi necessária enucleação do globo ocular.