primitive neuroectodermal tumor (penets) is an uncommon malignancy of bone and soft tissue witch rarely occurs in the kidney. in more than 90% of the cases, the tumor cells relieves a balanced translocation (11; 22) (q24; q12). immunohistochemical staining may be required for diagnosis of penet. the cells of tumor express cd99, vimentin, nse, fl1 but do not express ck, lca, myogenin, and wt1. w...

Pancoast tumor accounts for 3%-5% of all non-small cell lung carcinomas. This tumor has a distinct clinical presentation through local invasion and the resulting clinical entity called Pancoast syndrome. This syndrome includes severe shoulder pain, arm pain, and Horner’s syndrome andatrophy of forearm and hand muscles. The differential diagnosis of arm and shoulder pain is extensive. Thoracic o...

Objective: Patella is a sesamoid bone which develops in the quadriceps tendon. It is an uncommon site for neoplasms. The most common primary tumors which involve patella are benign. These include chondroblastoma, giant cell tumor (GCT) and aneurysmal bone cyst. Malignant lesions are less common in patella. These encompass metastasis, osteosarcoma and hemangioendothelioma. The most common compla...

the value of clinical use of tumor markers cea and ca15-3 for early detection of recurrent breast cancer still is a controversial. this study was investigated relationship between tumor markers cea and ca15-3 and recurrence breast cancer. data regarding 147 women who had breast cancer were entered into the study. patients were reviewed for 120 months after treatment. maximum time for relapse wa...

Desmoplastic small round cell tumor is a rare malignant tumor that occurs primarily in young males. Here, a case of small round cell tumor in an adult male successfully treated with a curative concurrent chemoradiotherapy is presented. A 58-year-old man had an intrapelvic tumor. Surgical resection was attempted, but the tumor was unresectable. Needle biopsy was performed and the diagno...

ampullary tumor is a rare cancer. these patients most commonly present with obstructive jaundice but sometimes disease appear with uncommon signs. this report is an example of such cases. our case is a 53 year old man who presented with recurrent fever and chills and iron deficiency anemia and has been misdiagnosed for two years. the proper diagnosis occurred when the patient showed abnormal li...

 Osteoid osteoma is a benign bone tumor and accounts for 10% of benign tumors. Almost any bones can be involved but half of cases involving femur or tibia. Osteoid osteoma is a rare tumor of the scapula with only 18 reported cases in the literature. We presented a case of osteoid osteoma of the scapula in right shoulder in angle of coracoid and geloneid in a 34- year old woman. She had right ra...