A novel pathology of a mediastinal neoplasm


Primary extragonadal malignant germ cell tumors (EMGCTs) are rare and account for only 2–5% of malignant germ cell tumors. Vascular tumors are uncommon mediastinal masses making up < 1% of all mediastinal masses. We report the case of a 20-year-old man presenting with a germ cell seminoma as well as an atypical hemangioma encapsulated in one mass within the mediastinum. This clinical report focuses on a 20-year-old man who presented with both a germ cell seminoma as well as an atypical hemangioma within one encapsulated mass, a unique case not presented before in literature to our knowledge. The histological analysis is essential in correctly diagnosing a neoplasm. Combining the unique histology of this case with the clinical and scientific knowledge of several specialties allowed the clinicians to successfully develop a treatment for this patient.

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Correspondence to Adam Antanas Kudirka.

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This article does not contain any studies with animals performed by any of the authors.

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Informed consent was obtained from the patient included in this study.

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Hutchison, D.D., Kudirka, A.A., Posa, A. et al. A novel pathology of a mediastinal neoplasm. Comp Clin Pathol 27, 1103–1106 (2018). https://doi.org/10.1007/s00580-018-2734-1

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  • Mediastinum
  • Neoplasm
  • Germ cell seminoma
  • Vascular
  • Extragonadal
  • Hemangioma