Mature mediastinal teratoma - gross pathology
Specimen obtained from the anterior mediastinum.
Surgical specimen from anterior mediastinum
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There is a well circumscribed, heterogeneous, solid to focally cystic mass with thin peripheral rim and septa. The solid areas are composed of yellow adipose tissue and pale chalky material while cystic areas are partly smooth walled, in areas associated with hair.
Mature cystic teratoma is a common neoplastic mediastinal tumour, predominantly seen in children and young adults.
On histology, the lesion is characterised by elements variably derived from the three germ cell layers (endoderm, mesoderm and ectoderm).
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