title: An Unusual Case of White Piedra Due to Trichosporon inkin Mimicking Trichobacteriosis.
abstract: White piedra is a superficial mycosis characterized by soft, white-to-tan, irregular nodules attached to the hair shafts. A 36-year-old man presented with small lumps in his pubic hair, without any other symptoms. The clinical features were suggestive of trichobacteriosis. Pathology analysis of the infected hair revealed that the concretions surrounding the hair shaft were full of fungal elements, parts of which had invaded into the cuticle. Culture on Sabouraud dextrose agar grew creamy, yellow-white colonies identified as Trichosporon inkin by the sequence of the nuclear ribosomal intergenic spacer region. The condition was treated by shaving the pubic hair and administering antifungal therapy (oral itraconazole and topical ketoconazole).
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China.
authors: Kaiwen
authors: K
authors: Zhuang
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China.
authors: Xin
authors: X
authors: Ran
authors: Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China.
authors: Yaling
authors: Y
authors: Dai
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China.
authors: Jiaoqing
authors: J
authors: Tang
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China.
authors: Qin
authors: Q
authors: Yang
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China.
authors: Sushmita
authors: S
authors: Pradhan
authors: Department of Dermatovenereology, West China Hospital, Sichuan University, Yuping Ran. No. 37, Guo Xue Xiang, Wuhou District, Chengdu, 610041, Sichuan Province, China. ranyuping@vip.sina.com.
authors: Yuping
authors: Y
authors: Ran
mesh_terms: D000328:Adult; D000935:Antifungal Agents / Q000627:therapeutic use; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D003937:Diagnosis, Differential; D004798:Enzymes / Q000032:analysis; D006651:Histocytochemistry; D006801:Humans; D008297:Male; D008828:Microbiological Techniques; D008853:Microscopy; D010854:Piedra / Q000209:etiology* / Q000382:microbiology / Q000473:pathology*; D017422:Sequence Analysis, DNA; D016896:Treatment Outcome; D014250:Trichosporon / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D060586:Trichosporonosis / Q000175:diagnosis* / Q000382:microbiology / Q000473:pathology*
chemical_list: D000935:Antifungal Agents; D004271:DNA, Fungal; D021903:DNA, Ribosomal Spacer; D004798:Enzymes
keywords: Dermoscopy; Fungal culture; Trichobacteriosis; Trichosporon inkin; White piedra