background: medulloblastoma is the most common malignant brain tumor in children. the important factors in predicting survival are the extent of disease, proliferation index of the tumor cells, histopathologic class and the age at diagnosis. the percentage of ki-67 positive cells reflects the proliferation  of the cells and is one of the critical factors which determine the growth of the tumor....

the brain is a rare site for metastasis in most extracranial pediatric solid tumors, including wilm’s tumor. outcome for these patients are generally dismal. very few cases have been reported to have good survival even after therapy. this paper reports a case of stage iv wilm’s tumor with lung metastases in a patient who developed a solitary brain metastasis five months after completion of chem...

gastric neuroendocrine carcinoma is a rare tumor which has a poor prognosis. herein, we present a 55-year-old woman who presented with complaints of recurrent vomiting, hematemesis and weight loss. endoscopic examination showed a large ulcerated mass in the antrum. microscopic evaluation of the specimen taken through biopsy was compatible with a small round cell tumor. however, definitive histo...

adrenocortical carcinoma (acc) is a rare tumor and usually a fatal disease which can develop at any age in either sex. differential diagnosis between malignant and benign adrenal mass is not easy which leads to significant clinical challenge for optimal treatment. here we report a 22-year-old woman diagnosed with primary hyper aldostronism initially but disease relapsed during six months and ma...

two rare cases of extra-articular diffuse variant giant cell tumor of the tendon sheath are presented, at the elbow of a 68-year-old female and the foot of a 56-year-old male. both patients presented with a palpable masses and marginal excision was performed; histological sections confirmed the diagnosis of extra-articular giant cell tumor. no adjuvant therapy was administered. at the last foll...

background: therapeutic and diagnosis properties of radioactive gold nanoparticle (198-aunps) cause them to be suitable for detection and treatment of tumors. objective: electrical and optical properties of peg-198aunps were examined in this paper. polyethylene glycol (peg)-198 aunps can be used for treatment and diagnosis of small intestine tumors. methods: wireless fluorescence capsule endosc...

introduction the eustachian valve (ev) remnant, when present in adults, is usually rudimentary. however, in echocardiographic examinations, it may appear as a mobile long structure in the right atrium, and it rarely protrudes into the right ventricle. when it is quite large, the ev remnant could be misdiagnosed as a right atrial tumor, thrombus, or vegetation. case presentation an 83-year-old p...

Introduction: Cardiac myxoma is a benign and rare tumor, which can present with a grim phenomenon if the presentation is late or the diagnosis and surgery are delayed. The purpose of this study was to share our institutional experience of cardiac myxoma. Material and Methods: This retrospective study was conducted to evaluate patients undergoing procedures at a single tertiary care centre for t...