a middle-aged woman with the chief complaints of dysnea and chest pain was referred to our center. chest x-rays and computed tomoram revealed a mass in the posteriof mediastinum, which was excised in toto. pathologicat report of the specimen labeled it as normal thyroid tissue (aberrant thyroid).

 Introduction:Mediastinum contains different vital structures that are located in the anterior and middle or posterior compartments. Various types of mediastinal masses or tumors can be seen in the mediastinum. Materials and Methods:This case series study was performed on 95 patients who had referred to Mashhad University of Medical Sciences between 1990 and 2010 were reviewed. The Inclusion cr...

Liposarcoma is rare in children and rarely occurs in the posterior mediastinum in any age group. A massive intrathoracic tumor in a 17-year-old young man was a diagnostic dilemma; preoperative radiographic evaluation and biopsy led us to believe it was a teratoma. At operation, a poorly differentiated myxoid liposarcoma originating from the posterior mediastinum was found and excised. To our kn...

Presence of thymus in the normal position as well as in the posterior mediastinum is an unusual phenomenon. We report here a case of posterior mediastinal mass in a 20-month old male child who presented with dysphagia and dry cough. Investigations revealed it to be a solid posterior mediastinal mass, suspected to be either lymphoma or a neuroblastoma. Excision of the mass followed by histopatho...

introduction:mediastinum contains different vital structures that are located in the anterior and middle or posterior compartments. various types of mediastinal masses or tumors can be seen in the mediastinum. materials and methods:this case series study was performed on 95 patients who had referred to mashhad university of medical sciences between 1990 and 2010 were reviewed. the inclusion cri...