A 55-year-old male developed itching on the anterior aspects of both legs and the right ankle. Gradually over the next 5 years there was thickening of the skin on these areas followed by the appearance of hyperpigmented, scaly, severely itchy plaques. He also noticed the appearance of a thick, hard horn-like structure projecting from the surface of the right ankle lesion for the last 2 years. A...

Sir, An 8-year-old boy presented to us with a raised asymptomatic cutaneous lesion over his left leg for the past one and half years. It started as a bluish, slightly elevated spot which gradually increased to attain its present size and shape. There was no preceding history of trauma or use of any medication. There was no overt history of external bleeding or oozing. Cutaneous examination reve...

BACKGROUND Traditional methods of detecting Leishmania from cutaneous lesions involve invasive diagnostic procedures, such as scrapings, which cause discomfort, require technical expertise, and carry risks of invasive procedures. We compared the performance of 2 novel, molecular-based non-invasive methods for the diagnosis of cutaneous leishmaniasis (CL). METHODS Consecutive patients presenti...

Over the last few years, several cases of feline leishmaniasis (FL) with cutaneous and visceral forms have been reported around the world. Nonetheless, the real susceptibility of cats to infection with Leishmania spp. and the outcome of leishmaniasis in these animals are poorly understood. Experimental studies on feline models will contribute to the knowledge of natural FL. Thus, in order to de...

BACKGROUND Cutaneous horn is a keratotic, conical and circumscribed lesion that can hide both benign or malignant lesions. OBJECTIVE To identify,from a histopathological point of view, the main clinical dermatoses that are presented ,from a clinical point of view, as cutaneous horn. METHODS RETROSPECTIVE HISTOPATHOLOGICAL STUDY OF 222 CASES OF CUTANEOUS HORNS THAT WERE CLASSIFIED AS SUCH BY...

Background: Cutaneous vasculitis is defined as the inflammation of blood vessels of the dermis. However cutaneous vasculitis is not a specific disease but a manifestation that can be seen in a variety of settings. We sought to review the clinical manifestations, laboratorial findings, pathological changes and etiologic association of cutaneous vasculitis in patients admitted to Dermatology Depa...

Kasabach-Merritt phenomenon (KMP) is relatively rare in childhood and adolescents with high mortality rate because of its hemorrhagic complications and unresponsiveness to treatments such as corticosteroids, vincristine, intravascular embolization, and/or surgery. Propranolol, a β -adrenergic receptor blocker, has a promising efficacy against vascular tumors such as infantile hemangiomas. But l...

Henoch-Schönlein purpura (HSP) is an IgA-mediated small vessels' vasculitis that affects the skin, intestines and kidneys. Pregnancy has been reported as an exacerbating factor. We present the case of a 24-year-old primigravida with HSP that occurred in the third trimester and lasted up to the end of the successful delivery. She had pruritic maculopapular exanthema on her legs. Biopsy of a cuta...

The pathological findings in three cases of equine phycomycosis in Costa Rica are described. Two cutaneous (Pythium sp) and one nasal lesion (Conidiobolus) were observed.