title: Severe pneumonia with a massive pleural effusion in a child caused by Tilletiopsis minor: the first case from Saudi Arabia.
abstract: Tilletiopsis minor, a blastoconidia-forming yeast, was isolated from a 4-year-old boy suffering from severe pneumonia. Chest x-rays revealed the progression of widespread and multiple nodular lesions, nonsymmetrical interstitial and airspace infiltrates, and consolidations. Creamy yellow, irregular, wrinkled yeast-like organisms were isolated from the pleural fluid specimens when cultured on Sabouraud dextrose agar for 5 days and incubated at 30°C. Microscopically, the organisms showed broad, irregular filaments with blastoconidia but no budding cells. Manual bench tests and automated phenotypic analyses failed to recognize the organism. This unique and rare organism (AB7-11; DSM 29469) was identified using the sequence analysis of the internal transcribed spacer region of the nuclear ribosomal DNA. It showed a precise alignment with the type strains of T minor. Subsequent to this diagnosis, and the earlier nonre.sponse to vancomycin and meropenem, the patient was put on liposomal amphotericin. However, the condition continued to deteriorate, and then, intravenous voriconazole was added to control the infection. Finally, the patient's condition improved, and he was discharged in good condition after 1 month of stay in the hospital.
authors.forename: Ibrahim A
authors.initials: IA
authors.lastname: Al-Zaydani
authors.forename: Martin R
authors.initials: MR
authors.lastname: P
authors.forename: Ali Mohd
authors.initials: AM
authors.lastname: Suheel
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: Al-Hakami
authors.affiliation: Dr. Mohamed E. Hamid, Department of Microbiology,, College of Medicine,, King Khalid University,, PO Box 641, Abha,, Saudi Arabia, M: 966-509-773-687, F: 966-77-224-7570, mehamid2@yahoo.com.
authors.forename: Mohamed E
authors.initials: ME
authors.lastname: Hamid
mesh_terms: D000666:Amphotericin B / Q000008:administration & dosage / Q000627:therapeutic use; D000935:Antifungal Agents / Q000008:administration & dosage / Q000627:therapeutic use; D001487:Basidiomycota / Q000302:isolation & purification*; D002675:Child, Preschool; D006801:Humans; D008172:Lung Diseases, Fungal / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D008297:Male; D010996:Pleural Effusion / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D011014:Pneumonia / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D012529:Saudi Arabia; D065819:Voriconazole / Q000008:administration & dosage / Q000627:therapeutic use
chemical_list: D000935:Antifungal Agents; C068538:liposomal amphotericin B; D000666:Amphotericin B; D065819:Voriconazole