background: gbm is the most common and malignant astrocity tumor and it is persistent to common treatment so, these patients have a very low survival. several researchers around the world, including iran, have been investigated gbm-cell line in vitro. however in vivo studies have not been fulfilled. methods : as standard cell line (u-87mg) derived from human gbm and total gbm tumor derived from...

giant cell tumors (gct) are benign tumors with potential for aggressive behavior and capacity to metastasize. although rarely lethal, benign bone tumors may be associated with a substantial disturbance of the local bony architecture that can be particularly troublesome in peri-articular locations. its histogenesis remains unclear. it is characterized by a proliferation of mononuclear stromal ce...

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...

The bening tumors of paratesticular tissues are uncommon and their frequency rating is as follows:adenomatoid tumor,leiomyoma and papilliferous cystadenoma.this paper reports two new cases of epididymal adenomatoid tumor in 43 and 25 years old males presented with testicular pain and a mass in their testes.diagnosis was achieved through physical examination and sonography with confirmed patholo...

Neurofibroma is a tumor composed of a complex proliferation of neuromesenchymal tissue (Schwann cells, perineural cells, fibroblast, and mast cells). We report a 45-year-old female who had a slow growing, large, soft, pedunculated mass on her left lateral neck. A skin biopsy confirmed the diagnosis of neurofibroma.

BACKGROUND AND AIM: Solitary fibrous tumor (SFT) is a quite uncommon tumor that commonly occurs in the pleura but occasionally involves an oral cavity. We are reporting this rare case in the oral cavity. The diagnosis depends on microscopic and immunohistochemical features. Patients with these tumors can be carefully treated with local excision, but tumors with...

objective(s): this study aimed to evaluate the role of pretreatment suvmax and volumetric fdg positron emission tomography (pet) parameters in the differentiation between benign and malignant mediastinal tumors. in addition, we investigated whether pretreatment suvmax and volumetric fdg-pet parameters could distinguish thymomas from thymic carcinomas, and low-risk from high-risk thymomas.method...

a malignant peripheral nerve sheath tumor (mpnst) is very rare, representing 3 - 10% of all soft tissue sarcomas. approximately half of all such tumors are diagnosed in patients with neurofibromatosis type 1 (nf1). the extremities are involved most commonly, and the patient’s age is usually 20 - 50 years. herein, we present a case of an mpnst that developed sporadically in an unusual location a...

ependymomas are glial tumors originate from ependymal cells lining the ventricles and the central canal of the spinal cord. two thirds of ependymomas arise in the infratentorial or intraventriclesandone-third aredetected in supratentorial area. however supratentorial “cortical” ependymomas are veryuncommon. ependymomas are usually infratentorial, intraventricular tumor, including 2–9% of all ce...