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 rad...

introduction: inflammatory myofibroblastic pseudotumors are initially described in the lung and various extrapulmonary sites such as the orbits, palatine tonsils, ears, gingiva, pterygomaxillary space, and periodontal tissues. these tumors rarely involve the larynx and predilection to the glottis occurs in an indolent manner.   case report this case describes a laryngeal myofibroblastic tumor i...

Background: Routine screening colonoscopy is on the rise and pathologists have to deal with the ever larger numbers of excised colonic polyps. It is very important to optimize the patients’ individual treatment and further surveillance. Pathologists play a critical role in management, as most of the clinical decisions concerning colonic polyp managemen...

Background: Schwannoma is a benign tumor which usually presents as a solitary slow-growing painless mass. Approximately 25–48% of all schwannomas occurs in the head and neck region and is found rarely in oral cavity, about 1% of head and neck cases. Tongue is the most common site, followed by buccal mucosa, palate, floor of the mouth, jaw, gingiva and lips. This tumor may prese...

Hepatoid variant of yolk sac tumor of ovary is an unusual tumor with an aggressive behavior. It is usually observed in young females, presents with abdominal complaints and is associated with raised α-fetoprotein (AFP) levels. It should be differentiated from other hepatoid tumors involving the ovary. A complete patient evaluation with gross, microscopy, and immunohistochemistry can identify th...

Introduction: Wilms tumor is one of the most common renal tumors in children. This type of tumor - accounting for 6 percent of tumors in children – shows a good prognosis if treated in time. This study is to investigate the clinical and pathologic findings as well as response to treatment in Iranian children with Wilms tumor treated at Besat hospital of Hamadan (2005-2009). Methods: In th...

Background and Objective: Wilms’ tumor has been recognized as the most common primary malignancy of kidney at childhood, comprises 5-6% of tumors in this period, and manifests itself with various clinical symptoms. Since there have been no sufficient studies in this field in Iran, therefore, this study w...

oral cavity t-cell lymphoma occurs rarely. this case report describes a patient with such a tumor. the case was a 75 years old man presented with a painless swelling on his hard palate mucosa. he had suffered from nose- bleeding and nasal obstruction. pathology revealed the presence of a t-cell lymphoma tumor in the palate. though rare, the signs and symptoms of the case suggest that t-cell lym...