abstract objective tumors of the central nervous system constitute the largest group of solid neoplasms in children and are second only to leukemia in their overall frequency during childhood. the main purpose of the present study is to determine the incidence, age, sex, location and histological diagnosis of cns tumors in children, less than 15 years of age, in the mofid children's hospital, i...

BACKGROUND Adenocarcinoma of the lung, once considered minimally related to cigarette smoking, has become the most common type of lung cancer in the United States. The increased incidence of this cancer might be explained by advances in diagnostic technology (i.e., increased ability to perform biopsies on tumors in smaller, more distal airways), changes in cigarette design (e.g., the adoption o...

The rapidly expanding fields of pharmacogenomics and pharmacodiagnostics have presented the pathology laboratories with many challenges and opportunities. As custodians of patient tissues, these laboratories are in the logical position to perform biomolecular testing for proper management of patients. In order to meet these challenges, the pathology laboratories of the twenty-first century shou...

Histopathology and cytopathology form the scientific and clinical basis for current prevention and treatment of cervical cancer. Histopathology determines treatment of cancer and precancer through classifying into a diagnosis the patterns of microscopic organization of cells in tissue sections from biopsy or surgical specimens. Although morphological concepts of cervical cancer and precancer ev...

objective: the objective of this study was to investigate the pathological alterations of methionine for chicken embryo.in recent years, amino acids are used in veterinary medicine for many purposes. they injected into hatching eggs to increase chick body weight and performance at hatch, but the adverse effects of amino acids have always been a major concern. there is scant information availabl...

the kidney of camel is known to play a vital role in water conservation through the production of highly concentrated urine that may predispose animal to varieties of renal dysfunction. in camels renal disorders have received lesser attention in comparison with other animals, thus there is shortage of information in this area. the present study was conducted on 100 slaughtered camels (camelus d...

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 was conducted to investigate its histopathology and clinical symptoms. materials and methods:...

histoid leprosy (hl) is a rare variant of lepromatous leprosy, occurring in long-standing cases, mostly in a background of acquired drug resistance. patients usually present with sudden onset multiple nodules and plaques, most often involving the skin and subcutaneous tissue of trunk and lower limbs. here we report an unusual case of de novo (without any history of prior anti-leprotic therapy) ...

The significance of smear cytology of ultrasonography (US) or computed tomography (CT) guided core needle biopsy tissues have never been referred to. In this study, the first comparison between cytology and the corresponding histopathology was made to clarify the role of additional smear cytology in the diagnosis of lung lesions. This was a retrospective analysis of sixty-nine consecutive patie...

Methods. Forty-four surgically excised melanocytic lesions of the iris were histologically classified as nevus or melanoma. Morphometric analysis using a digital filar micrometer (LaSICO 1602N-10 and 5-4A) measured the mean size of the 10 largest nucleoli, and Feulgen staining and image cytometry (CAS 200 Cell Analysis Systems) analyzed the nuclear DNA ploidy in the lesions. Patient follow-up i...