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...

rhabdomyomata are probably the most common tumors that occur very rarely during infancy. in this paper, we report the case of a 49-day-old infant who was diagnosed by echocardiography examination with left ventricle outflow tract (lvot) obstruction caused by rhabdomyoma. the infant underwent surgical approach, and her mass was shaved. finally, she was discharged from hospital in good general co...

ovarian borderline serous tumors are uncommon. combination of borderline serous adenofibromatous tumor and prominent micro papillary architecture is not previously reported. we report a case of borderline papillary serous adenofibromatous tumor (also called serous adenocarcinofibroma) with extensive micropapillary pattern in a 27 year-old married woman. she was infertile and presented with diff...

background: bombesin shows high affinity for gastrin-releasing peptide (grp) receptors which over expressed on the cell surfaces of several human tumors particularly in prostate and breast cancers. the aim of this study was labeling of designed analogue with99mtc via hynic and tricine /edda and evaluation as potential targeted tumor scintigraphic agent.materials and methods: hynic-bombesin was ...

hemangioma of the rib is a rare benign vascular tumor. herein, we report a 63-year-old man presenting with hemangioma of the left sixth rib. an osteolytic eccentric expansive mass with calcification and focal cortical disruption was detected on chest computed tomography (ct). the mass showed low 2-deoxy-2-[18f]-fluoro-d-glucose (18f-fdg) avidity on positron emission tomography. the patient unde...

conclusions liver metastasis of neuroendocrine tumors in iran presents in a very similar manner as that seen in western countries. in about 89% of cases with liver-net, complete imaging, clinical, and pathological studies can help to identify the primary origin of the liver-net, which is very important in the patient’s management. results the most common primary site of metastatic gi-net to the...

in 1890, coley observed that cancer patients who developed infections had smaller tumors. from this, he developed coley’s toxin and treated tumors with injections of infectious materials. in 1960s,  mahaley used monoclonal antibodies to treat central nervous system(cns)  tumors, that research and clinical investigations in brain tumor immunotherapy became a serious undertaking. there are severa...

odontogenic myxoma (om) is an infiltrative benign bone tumor that occurs almost exclusively in the facial skeleton. the radiographic characteristics of odontogenic myxoma may produce several patterns, making diagnosis difficult. cone-beam computed tomography (cbct) may prove extremely useful in clarifying the intraosseous extent of the tumor and its effects on surrounding structures. here, we r...

desmoplastic ameloblastoma is a rare variant of ameloblastoma. up until now, less than 150 patients have been reported in the literature. we report a case of desmoplastic ameloblastoma in a 45-year-old female with a painless swelling in the left anterior maxillary region. fine needle aspiration yielded no fluid. periapical and panoramic radiographs as well as computer tomography scan showed a m...