Oral mucosal involvement in visceral leishmaniasis

Nasal Leishmaniasis Misdiagnosed With Intranasal Polyp in a Patient Candidate for Rhinoplasty

Mucosal leishmaniasis (ML) is a chronic and rare form of leishmaniasis that causes malignant lesions in the mucosa of the nasal, pharyngeal, and laryngeal regions. We describe a 29-year-old woman who had been suffering from an intranasal polyp for 3 years. The polyp recurred annually after surgical removal, and was diagnosed as nasal leishmaniasis.

Tongue Nodule as Primary Manifestation of American Cutaneous Leishmaniasis in an Immunocompetent Patient

Leishmaniasis is a parasitic disease considered an endemic public health problem in developing countries, where it is a reportable disease. Isolated oral manifestation is rare, and its clinical manifestations are variable. In this paper we describe an unusual case of an immunocompetent patient, 57-year-old man with a painless reddish submucosal nodule located on the tongue dorsum. Microscopical analysis showed chronic inflammatory infiltrate with macrophages containing leishmania in cytoplasmic vacuoles. PCR assays confirmed the diagnosis and patient was treated with meglumine antimoniate for 30 days. Absence of the parasite was confirmed by PCR. Thirteen years after treatment, a scar fibrosis persisted on the tongue dorsum. The case reported reveals that leishmaniasis should be considered in the diagnosis of tongue nodules in immunocompetent patients.

Parasitological association between human leishmaniosis mucosa and paracoccidioidomycosis. Case report

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It affects the upper part of the aerodigestive tract, with mainly lesions in the oral and nasal mucosa and occasionally in the larynx and pharynx. The exclusive involvement of oral mucosa is quite rare.

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The diagnosis of leishmaniasis is a real challenge for all professional team.

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In Brazil, the highest incidence of Leishmaniasis is in the Northern Region, which comprises the States of Acre, Amapá, Amazonas, Pará, Rondônia, Roraima and Tocantins.

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Coexistence of parasitic diseases between Paracoccidioidomycosis and Leishmaniasis.

Introduction

Leishmaniasis Mucosa (LM) is a tropical disease that affects the upper respiratory tract and/or oral mucosa. Its etiological agent is Leishmania spp. Paracoccidioidomycosis disease caused by the fungus Paracoccidioides brazilienses. The aim is to report a case of Leishmaniasis Mucosa in association with Paracoccidioidomycosis.

Presentation of case

A male patient, 24 years old; Intraorally, presence of a non-bleeding erythro-leucoplastic lesion that affected the soft palate and oropharynx; 3 years of evolution. On the face Computerized Tomography (CT) examination, it was possible to observe muco-periosteal thickening in the soft palate region; immunohistochemical markings for Paracoccidiodes brasiliensis. He was diagnosed with Leishmaniasis by Montenegro intradermoreaction (MIDR).

Discussion

The predisposition to Paracocodioidomycosis after Leishmaniasis infection is justified by factors already elucidated – hygiene, nutrition habits and immunodeficiency, but the reason for the non-progression of the fungus after years of evolution could be related to its inhibition due to the presence of the protozoan in the same wound.

Conclusion

This phenomenon may be explained by future studies that need to be performed to answer such questions.

Oral leishmaniasis: Report of two cases

Leishmaniasis is a chronic inflammatory disease caused by several species of the parasite Leishmania that is transmitted by insects of the genus Phlebotomus spp. or Lutzomyia spp. This disease can affect skin, mucous membranes and viscera being classified as cutaneous, mucocutaneous and visceral leishmaniasis, depending on the spectrum of clinical manifestations. Diagnosis can be achieved through biopsy, microscopical analysis, Montenegro intradermoreaction and/or ELISA. The dentist plays an important role in the diagnosis of this disease due to frequent involvement of oral mucosa. This article reports two clinical cases of leishmaniasis with oral mucosa involvement, their diagnosis workup and treatment.

Identification of Visceral Leishmaniasis-Susceptible Areas using Spatial Modelling in Southern Caucasus

This study explores the application of spatial modelling techniques to generate susceptibility maps for a neglected zoonotic disease, visceral leishmaniasis (VL), in an endemic area in southern Caucasus that includes Iran, Armenia and Azerbaijan. The social and physical environment of southern Caucasus has been mainly characterized by the presence of several factors that are strongly associated with VL, which has caused a significant number of infections during the past decade. Three popular spatial modelling techniques, consisting of the weights of evidence, logistic regression and fuzzy logic methods, were evaluated and trained using a study area in north-western Iran where an inventory of highly infected areas and high-quality evidential factors was available. Model performance was assessed using the receiver-operating characteristic (ROC) approach. According to the results of these assessments, the fuzzy logic method with γ = 0.5 was chosen for the prediction of VL incidence in southern Caucasus. The susceptibility map generated using the fuzzy logic method indicated that VL followed a spatial pattern at the conjunction of the three countries, which suggests that the prevalence of VL in southern Caucasus is socio-ecologically dependent.