title: An Adult Paratesticular Malignant Ectomesenchymoma With Post-operative Flare-up of Lung Metastasis.
abstract: Malignant ectomesenchymoma (MEM) which is derived from the remnants of migratory neural crest cells (ectomesenchyme) is a rare and rapidly progressing tumor consisting of neuroectodermal and mesenchymal neoplastic elements. This tumor occurs mostly in children and adolescents, but rarely in adults. We report a 34-year-old male with left paratesticular malignant ectomesenchymoma who received radical orchiectomy and was followed by post-operative flare-up of lung metastasis within 2 weeks. We present the overall treatment strategies for this extremely rare tumor and related findings.
authors.affiliation: Department of Urology, Taipei Medical University, Shuang Ho Hospital, New Taipei, Taiwan, ROC.
authors.forename: Wei-Tang
authors.initials: WT
authors.lastname: Kao
authors.affiliation: Department of Urology, Taipei Medical University, Shuang Ho Hospital, New Taipei, Taiwan, ROC.
authors.forename: Yi-Te
authors.initials: YT
authors.lastname: Chiang
authors.affiliation: Department of Urology, Taipei Medical University, Shuang Ho Hospital, New Taipei, Taiwan, ROC.
authors.forename: Kai-Yi
authors.initials: KY
authors.lastname: Tzou
keywords: Ectomesenchymoma; Lung metastasis; Paratesticular tumor