A case of rhinofacial zygomycosis with of years duration, caused by Conidiobolus coronatus is described. The patient, a 72-years-old woman, presented with a bilateral distortion of the subcutaneous tissue and disfigurement of the face. Treatment with ketoconazole and potassium iodide did not prevent several relapses. At present she is still under treatment with fluconazole with clinical healing. Histopathological and mycological examination confirmed the dermatological diagnosis. An increasing number of cases of zygomycosis caused by fungi of the order Entomophthorales have also been reported in the Northern and Northeastern States of Brazil.
The authors report a case of subcutaneous mucormycosis in a diabetic patient with verrucous lesions in the fourth finger of the right hand. Initially diagnosed as a fixed cutaneous sporotrichosis case, success was obtained with the use of potassium iodide with healing of the lesion in a period of nearly 5 months. At present the patient remains under clinical observation with no treatment or relapse.
A case of phaeohyphomycosis caused by Bipolaris hawaiiensis is reported. The patient, an immunocompetent host, presented a verrucous lesion on the first finger of the left foot. Dematiaceous septate hyphae and yeast-like elements were seen in direct and histological examination. The isolated strain was identified on the basis of micro and macromorphological aspects. Treated with electrocoagulation, the lesions healed and presented no relapse after two years follow-up.
We report a 14-month-old White boy who was referred to our dermatology unit for evaluation of a skin eruption on his nose. The initial examination led us to the clinical diagnosis of impetigo. The mycologic studies found an uncommon dermatophyte agent, Microsporum gypseum. The main differential diagnosis of tinea faciei is discussed.
Summary: The authors report a case of tinea pedis with interdigital lesions of the feet, caused by Scytalidium lignicola, anamorphous state of Hendersonula toruloidea. Microscopic examination of pota‐to‐dextrose agar culture showed catenulate and bicellular ochreous arthroconidia. Initially diagnosed as dermatophytosis, the case showed no success with the use of itraconazole.
The main taxonomic aspects referring to Scytalidium lignicola, S. hyalinum and Hendersonula toruloidea are discussed due to the mycological importance of the present case in dermatology.
Scytalidium hyalinum, actually anamorph of Hendersonula toruloidea, should be incorporated in the future in a new genus (Dickinson et al. 1980, McGinnis 1985).
Zusammenfassung: Die Autoren beschreiben einen Fall von Tinea pedis verursacht durch Scytalidium lignicola, die anamorphe Form von Hendersonula toruloidea.
Das mikromorphologische Aussehen auf Kartoffel‐Dextrose‐Agar zeigte die Anwesenheit von ockerfarbigen, uni‐ und doppelzellulären langen Ketten von Arthrokonidien. Anfangs wurde die Diagnose einer Dermatophytose gestellt und deshalb mit Itraconazol behandelt, aber ohne klinische Besserung. Da dieser Fall für die Dermatologie recht wichtig erscheint, wird die Taxonomie des Erregers näher erörtert, insbesondere in Bezug auf die Pilze Scytalidium lignicola, S. hyalinum und Hendersonula toruloidea. Scytalidium hyalinum sollte künftig nicht mehr nur als anamorphe Form von Hendersonula toruloidea (Dickinson et al. 1983; Mc Ginnis, 1985) aufgefaßt, sondern einer neuen Gattung zugeordnet werden.
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