270 We present a case of a 61 ‐year ‐old man with a his‐ tory of pancreatitis, who presented at the emer‐ gency department with chest pain, vomiting, and dysphagia. His blood count, the levels of cardi‐ ac and liver enzymes and electrolytes, as well as the results of renal function tests were normal. An electrocardiogram revealed sinus rhythm with‐ out any changes of ischemia. Chest X ‐ray with...

Introduction: Spontaneous pneumomediastinum (SP) is the accumulation of air in mediastinum without a surgical or traumatic etiology. It thought that basic mechanism triggering SP pressure difference develops after strong Valsalva maneuver.
 Case report: We presented 50-year-old male patient was admitted to emergency department with sudden onset chest and epigastric pain started standing up...

Atypical lipomatous tumors, so-called well differentiated liposarcomas are the intermediate or locally aggressive form of adipocytic tumors. Mediastinum is an uncommon localization for these tumors and they have a potential risk of recurrence following excision. We herein report a case with a giant atypical lipomatous tumor located at the mediastinum that was surgically excised. The patient is ...

We experienced an extremely rare case of a thymoma in the middle mediastinum. A 42-year-old woman presented with a 4-cm-sized abnormal mass in the middle mediastinum by chest computed tomography. To resect this tumor, we performed surgery using the thoracoscopic lateral approach from the right side subsequently followed by a median sternotomy. After the resection of this tumor, the intraoperati...

Synovial sarcoma occurs predominantly in the soft tissues of the extremities, but is exceedingly rare in the mediastinum. It has overlapping histological and immunophenotypic features with other tumours in the differential diagnosis. We report a case of a patient who had an incidental finding of such a tumour. Because of the rarity of this tumour in the mediastinum, optimal therapy is unknown a...