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Article
May 1984

Origin of Tancho's Nodules

Author Affiliations

Department of Dermatology Miyazaki Medical College 889-16 Kiyotake, Japan

Kumamoto, Japan

Arch Dermatol. 1984;120(5):575. doi:10.1001/archderm.1984.01650410017003
Abstract

To the Editor.—  We read with great interest the article on Tancho's nodules by Gilmore et al1 in the May 1983 Archives. Tancho's nodules may be defined as ball-like nodules made of inert material such as glass or a container of Tancho hair pomade, a Japanese product, inserted into the dorsum of the penis for the purpose of exciting the sexual partner by clitoral stimulation. Even pinballs are used. This peculiar practice has been seen not only in southeast Asia2,3 but also in Japan. In Japan this custom is observed chiefly among scamps or yakuza. It is said that this practice is usually taught when the subjects are serving terms in prisons.

Report of a Case.—  An 18-year-old Japanese man who was a cook on a deep-sea fishing boat inserted a glass ball into the dorsum of his penis. The glass ball was made from the bottom of

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