Skip Navigation
Skip to contents

J Pathol Transl Med : Journal of Pathology and Translational Medicine

OPEN ACCESS
SEARCH
Search

Search

Page Path
HOME > Search
2 "Trichogerminoma"
Filter
Filter
Article category
Keywords
Publication year
Authors
Case Reports
Trichogerminoma: A case report.
Sung Suk Paeng, Jin Hee Sohn, Duck Hwan Kim, Hee Jin Chang, Jung Il Suh, Kye Yong Song
Korean J Pathol. 1996;30(4):340-343.
  • 1,592 View
  • 29 Download
AbstractAbstract PDF
Though trichogenic tumors were classified as trichoblastoma, trichoblastic fibroma, trichogenic trichoblastoma and trichogenic myxoma by Headington(1970), their true classification depends upon the epithelial and mesodermal component as well as evidence of their induction. Because of the rarity of hair germ cell tumors their classification is still controversial. In this report, we describe a case of trichogerminoma which is not included in the above classification. The trichogerminoma was first described by Sau et al. in 1992 and characterized by its morphologic pattern of germinal centers and lymphoid follicle-like structures in the nests of trichoblasts. Herein we reporte a tumor which arose on the skin on the back of a 51-year-old man and presented as a sharply circumscribed mass(4.5x2.0x1.5 cm) involving both the dermal and subcutaneous tissues without any epidermal connection. The tumor had many germinal center-like structures in the basaloid trichoblasts. Lobular cell nests were separated by variable amounts of stroma, but no horn cyst were noted. The germinal center-like cells showed early differentiation of hairs, resembling early hair bulbs. Trichogerminoma is considered to be a type of tumor located between trichoblastoma and trichoblastic fibroma.
Pigmented Trichogerminoma: A Case Report.
Jung Ha Shin, Ji Han Jung, Jinyoung Yoo, Seok Jin Kang, Kyo Young Lee
Korean J Pathol. 2007;41(3):187-189.
  • 1,649 View
  • 19 Download
AbstractAbstract PDF
Trichogerminoma is a rare cutaneous adnexal tumor that dysplays differentiation toward the hair germ epithelium. This tumor was first described by Sau et al. in 1992 and it is characterized by densely packed round nests or cell balls resembling hair bulbs. Herein, we report on a deeply pigmented and sharply circumscribed nodular tumor that was excised on the abdomen of a 48-year-old woman. Histologically the tumor involved both dermis and subcutis without any epidermal connection. The main nodule was subdivided into the smaller lobules by fibrous stroma. The lobules were composed of masses of basaloid cells that displayed peripheral palisading. Within the lobules, the basaloid cells formed numerous cell balls. The tumor presented the characteristic features of trichogerminoma. Interestingly, our case was the pigmented type, which was remarkable by virtue of the heavy melanin deposits found within and around the tumor nests. To the best of our knowledge, this is the first case of pigmented trichogerminoma that has been reported worldwide.

J Pathol Transl Med : Journal of Pathology and Translational Medicine
TOP