Background: The effect of race and ethnicity on some kind of malignant bone tumors including Ewing sarcomahas been proven in different studies. In order to evaluate the latter, national cancer registries may help to increaseunderstanding about potential cancer causes, prevention and control strategies, and apply these findings to controlhealth problems among populations with s...

  Although most breast cancers are adenocarcinomas of the mammary gland, primary breast sarcomas may also arise from mammary gland mesenchymal tissue. Sarcomas represent less than 1% of primary breast neoplasms. These tumors are at high risk of recurrence and are known to have poor prognosis. Surgical resection is the primary treatment for these lesions and axillary lymph node dissection is no...

primary cardiac sarcomas are rare clinical entities with an incidence rate of 0.0001% in collected autopsy series and are regarded as very aggressive tumors. we herein describe a 21-year-old woman presenting with syncope, dyspnea, and abdominal distention. she suffered from massive ascites, plural effusion, and liver congestion demonstrated by abdominal sonography and chest x-ray. transthoracic...

Introduction: Sarcomas account for 1% of all tumors originated in the head and neck regions in adults. They constitute a heterogeneous group of tumors of mesenchymal origin with multiple histological variants. The undifferentiated pleomorphic sarcoma (UPS) subtype is the most frequent variant with an incidence range of 2.7-38%.   Materials and Methods: This retrospective...

Primary soft tissue sarcomas of the breast constitute less than 5% of all soft tissue sarcomas and less than 1% of malignant breast cancers. The rarity of this tumor limits most studies to small retrospective case reviews and case reports. Primary breast sarcomas are locally aggressive tumors as evidenced by the high rate of local recurrence when excisional surgery is performed. A contemporary ...

Uterine sarcoma is a rare tumor of mesodermal origin, accounting for 2-6% of uterine malignancies. Leiomyosarcoma (LMS) has been reported in only 1% of all uterine malignancies and is regarded as the most common primary uterine sarcoma. Herein, we present a case of LMS with unusual macroscopic features. The patient was a 61-year-old woman with LMS, which consisted of a large cystic mass (88×136...

Primary synovial sarcoma of the thyroid is an extremely rare condition which has only been reported twice in the literature. We herein report a case of highly aggressive and rapidly lethal primary synovial sarcoma of the thyroid. A 72-year-old woman presented with extensive local invasion, rapid progression, and early distant metastasis secondary to primary thyroid synovial sarcoma. The tumor e...

Primary myeloid sacrom (MS) is a rare tumor and even more rare in multiple organs with no evidence of bone marrow involvement. This report describes an unusual case of a 19-year-old male presenting scrotal MS with a history of subconjunctival MS, 5 months ago. Bone marrow biopsies showed no evidence of acute leukemia. Despite radiotherapy for first involvement and chemotherapy for second presen...

Background: Bone sarcomas are the most common malignancies of bone tissues in children, and are classified intotwo groups as osteosarcoma and Ewing’s Sarcoma. Treatment and prognosis depend on the subtype and grade ofthe tumor. The goal of this study was to evaluate the features bone sarcoma in patients referred to MAHAK childrenhospital since 2007 to 2009.Materials and Methods: This was a retr...