Introduction:Trichofolliculoma characterized clinically by the presence of acentral dilated pore with tufted hairs and corresponds histologically to a central primary follicle and many secondary vellus hair follicles ...Introduction:Trichofolliculoma characterized clinically by the presence of acentral dilated pore with tufted hairs and corresponds histologically to a central primary follicle and many secondary vellus hair follicles originating from it.Thus far,dermoscopy dascription of trichofolliculoma has been lacking.Here,we describe a typical case of trichofolliculoma,particularly the special manifestation under the dermoscopy.Case presentation:A 29-year-old man complained a five-year history of a nodule containing a central whitish hair plug on his left tempus.Dermoscopic examination revealed a well-defined,yellow macule with a central whitish hair plug surrounded by dilated capillaries,and histopathological analysis was consistent with trichofolliculoma.Discussion:The findings of dermoscopy were also vary,which may be affected by the origin of the disease,various phases of the hair cycle,depth of the lesion,and even external stimulus.Conclusion:Diagnosis of trichofolliculoma is sometimes difficult because the presence of the central crater and visible hairs is low,and dermoscopy examination may be a potentially useful diagnostic tool.展开更多
基金The study was supported by CAMS Innovation Fund for Medical Sciences(No.CIFMS-2017-I2M-1-017).
文摘Introduction:Trichofolliculoma characterized clinically by the presence of acentral dilated pore with tufted hairs and corresponds histologically to a central primary follicle and many secondary vellus hair follicles originating from it.Thus far,dermoscopy dascription of trichofolliculoma has been lacking.Here,we describe a typical case of trichofolliculoma,particularly the special manifestation under the dermoscopy.Case presentation:A 29-year-old man complained a five-year history of a nodule containing a central whitish hair plug on his left tempus.Dermoscopic examination revealed a well-defined,yellow macule with a central whitish hair plug surrounded by dilated capillaries,and histopathological analysis was consistent with trichofolliculoma.Discussion:The findings of dermoscopy were also vary,which may be affected by the origin of the disease,various phases of the hair cycle,depth of the lesion,and even external stimulus.Conclusion:Diagnosis of trichofolliculoma is sometimes difficult because the presence of the central crater and visible hairs is low,and dermoscopy examination may be a potentially useful diagnostic tool.
