introduction: bombesin (bn), a 14-amino acid neuropeptide, shows high affinity for the human grp (gastrin releasing peptide) receptors, which are overexpressed by a variety of cancers, including prostate, breast, pancreas, gastrointestinal, and small cell lung cancer. aim was to prepare [6-hydrazinopyridine-3-carboxylic acid (hynic0), d-tyr6, d-trp8] - bn [6-14] nh2 that could be easily labeled...

introduction paragangliomas are mostly localized in the adrenal medulla and they are usually pheochromocytomas, derived from the neural crest, but otherwise mesenteric paragangliomas are extremely rare tumors. case presentation in this article we represent a 59-year-old female with an abdominal mass and pain due to mesenteric paraganglioma. conclusions paragangliomas can occur as mesenteric tum...

osteosarcoma (os) is a malignant mesenchymal tumor, which rarely occurs in the maxilla. although variable histologic and radiographic features of os have been reported previously, in the majority of the cases painful swelling of the jaw is mentioned as the first clinical presentation. furthermore, early diagnosis and wide surgical resection of the tumor are the most important determinant factor...

purpose: to assess the relative frequencies of etiologies leading to eye removal in patients who referred to feiz hospital, isfahan, between 2011 and 2014. methods: this retrospective study was conducted on patients who underwent eye removal at feiz hospital. age, sex, eye laterality, underlying etiology, visual acuity, and surgical technique (enucleation, evisceration, or exenteration) were re...

chondrosarcoma is the second most common primary mesenchymal malignant tumor of the bone. the most common form is central chondrosarcoma and the rarest is intracortical chondrosarcoma. here, we describe the clinical, pathological, and imaging features of a case of intracortical chondrosarcoma as well as the outcome of surgical treatment. this is the third case reported in the literature.

background: rahbdoid tumor of kidney (rtk) is a childhood rare neoplasm, previously thought as a sarcoma variant of wilms’ tumor, but now is recognized as a distinct pathologic entity. method : we report a pathologically proved case of rtk, associated with brain mass in a 4.5-month-old girl that has referred for gross hematuria. shortly after initiating chemotherapy, because of retractile vomit...

how to cite this article: tabatabaei sm, seddighi a, seddighi as. posterior fossa tumor in children. iran. j. child. neurol 2012;6(2): 19-24.   objective primary brain tumors are the most common solid neoplasms of childhood, representing 20% of all pediatric tumors. the best current estimates place the incidence between 2.76 and 4.28/100,000 children per year. compared with brain tumors in adul...

hemangiomas are considered as vascular malformations which are categorized by the type of vascular channel to capillary, cavernous, venous or arteriovenous(1). their usual locations are soft tissue , cutaneous or subcutaneous tissue and bone especially vertebra(2).however, intradural extramedullary hemangiomas are rare and most of them fall in cavernous type category. hereby, authors report a w...

case presentation in november 2015, a 31-year-old pregnant woman at gestational week 12 of her second pregnancy was referred to our private clinic in rasht, iran. she had microscopic hematuria; a mass measuring 39 × 33 mm in the upper portion of her right kidney was was detected by ultrasonography. conclusions a percutaneous renal mass biopsy was used, instead of nephrectomy, to diagnose the ma...

testicular germ-cell tumors are the most common malignancy among men aged 20-40 years, and 60 percent of them are seminomas. these tumors are now an important socio-economic problem, considering their growing incidence. thus we undertook to evaluate the results of curative irradiation in our testicular seminoma patients and compare them to literature results considering the use of cobalt-60 sys...