Simultaneous multiple organs immature teratomas: a case report and literature review.

Primary simultaneous multiple organs teratomas are extremely rare. They usually arise in the gonads, and only 1-3 % of them arise in the mediastinum. We present a case of simultaneous multiple organs immature teratomas who was admitted to Razi hospital because of cough, dyspnea, and left-side supraclavicular mass. Computed tomography (CT) showed a big mass with multiple high densities, nodular, semi-solid, heterogenic structures on the left side of the neck, left-side anterior mediastinum, right-side middle mediastinum and right-side suprarenal region. CT-guided needle biopsy was performed and histopathological study showed immature teratoma. After performing neoadjuvant therapy, the tumors were removed. The patient underwent chemo radiation therapy on the mediastinum and abdomen. On 6-months follow-up, he was asymptomatic. This case is being reported because of the rarity of multiple organs immature teratomas and informing other clinicians about managing these cases.