Precocious puberty as initial presentation in mediastinal tumour.

Numerous disorders can cause precocious puberty in children, and germ cell tumours (GCT) are one of the rare causes . We report two cases of mediastinal malignant GCTs who presented with precocious puberty. Both patients had bulky and advanced disease, were aggressively treated with neo-adjuvant chemotherapy and surgery, and are surviving and free of disease.