Trichophyton violaceum, a less common and geographically restricted infection is reported in a 18-day-old neonate. The diagnosis was made by potassium hydroxide of skin scraping examination and confirmed by culture. The patient was treated successfully with miconazole nitrate application. A large family with crowded living was considered the main predisposing factor.

A facile procedure is described for the preparation of [14C]epicholesterol from [14C]cholesterol. Cholesterol is first converted to cholesteryl mesylate, which is treated with cesium acetate and 18-crown-6 in refluxing toluene to give epicholesteryl acetate. The latter is hydrolyzed, without isolation, with potassium hydroxide in tetrahydrofuran-methanol to give epicholesterol, which is obtaine...

A case of zygomycosis presenting with non-healing multiple discharging sinuses in a diabetic patient is reported here. The debrided tissue on histopathological examination revealed dense infiltration with aseptate fungal hyphae. Potassium hydroxide mount showed hyaline aseptate hyphae suggestive of zygomycosis. On culture, Absidia corymbifera was isolated. The patient responded to surgical debr...

Retrospective evaluation of potassium hydroxide plus calcofluor white (KOH+CFW), Gram, Giemsa, and modified Ziehl-Neelsen (1% H(2)SO(4), cold) stains for the detection of microsporidia in corneal scrapings from 30 patients showed KOH+CFW and acid-fast stains to be most efficient (29/30 [96.7%] and 28/30 [93.3%], respectively) in the diagnosis of microsporidial keratitis.

To study acoustic microfluidic particle manipulation, a microfluidic channel was designed in AutoCAD and fabricated in a silicon wafer using potassium hydroxide etching and other cleanroom techniques. The first channel created was destructively tested and its fabrication techniques characterized; future channel development is outlined.

Tinea pedis is the most common fungal infection worldwide. There are three well-accepted clinical presentations based on the offending organism. Predisposing factors include heat, humidity, and occlusion. Mild disease can evolve to "dermatophytosis complex" through bacterial superinfection. Potassium hydroxide preparation and culture are important diagnostic tests in each case.