Malignant Transformation in a Mature Testicular Teratoma Left Untreated for more than 50 Years Since Childhood

T. Asano Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

MD, PhD S. Kawakami Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

T. Okuno Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

T. Tsujii Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

T. Nemoto Department of Pathology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

Y. Kageyama Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan. Tel: +81 3 5803 5295. Fax: +81 3 5803 5295. E-mail: [email protected]

K. Kihara Department of Urology and Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

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Abstract

Although testicular teratoma in childhood is regarded as a benign tumor, little is known about the consequences of pediatric teratoma being left untreated. We report herein a case of malignant transformation observed in a mature testicular teratoma that was presumed to have remained benign for >50 years.

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Malignant Transformation in a Mature Testicular Teratoma Left Untreated for more than 50 Years Since Childhood

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Malignant Transformation in a Mature Testicular Teratoma Left Untreated for more than 50 Years Since Childhood

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