Tumors that grow within the adrenal medulla are called pheochromocytoma; when located extra-adrenal, they are called paraganglioma. Paraganglioma of the bladder are very rare, with only 180 reported cases. Less than 30 were malignant. We report a case of a 72-years old man with bladder paraganglioma who presented with painless hematuria. Urgent transurethral resection (TUR) was performed. Defin...

Using imunohistochemical technique, localisation and intensity of COX2 expression were estimated in canine soft tissue fibrosarcomas. The obtained results were related to tumour grade of malignancy. The material was sampled in the course of surgery from 23 dogs of various breed, 5 to 18 years of age. The presence of COX2 was demonstrated in cell cytoplasm in over 43% tumours. Augmented expressi...

A granular cell tumor (GCT) in the central nervous system (CNS) of a ferret is rare finding. In this case cerebral GCT described 5-year-old castrated female ferret. The animal developed lameness right hind leg which progreseed to total ataxia. died and necropsy revealed mass medial caudal part left frontal lobe brain. Based on histological imunohistochemical findings, was diagnosed as tumor. Im...

HYPOTHESIS If the sentinel lymph nodes (SNs) draining a primary invasive breast cancer are free of tumor, then axillary lymph node dissection is not necessary for management of disease. DESIGN AND INTERVENTION In July 2000, we reported our initial experience of a small cohort of patients who underwent axillary lymph node dissection only if their SNs were involved with metastases. We now repor...

background: lymphadenitis is a common form of extra-pulmonary tuberculosis. as in peripheral health centers, the facili­ties for histopathology and culture are lacking, material obtained by fine needle aspiration (fna) in suspected cases of tubercu­lar lymphadenitis (tbl) cid fast bacilli (afb) by ziehl neelson method as every designated micros­copy centre under revised national tuberculosis co...

background : cd117 is a thyrosin kinase receptor encoded by c-kit proto-oncogene. it is expressed during normal development in some tissues and also in a subset of neoplasia especially gastrointestinal stromal tumors   (gists). treatment with thyrosin kinase inhibitors (e.g., imatinib) is useful in cd117- positive gists. the goal of this study is to investigate the expression of cd117 in glial ...

argyrophilic staining of nucleolar organizer regions (agnor) has been considered to be useful in the diagnosis and prognostic evaluation of different cutaneous tumors. in order to evaluate the role of the agnor technique in discriminating aggressive from non-aggressive basal cell carcinoma (bcc), paraffin-embedded histologic sections from 30 cases of aggressive bcc (bcc2) and 30 cases of non-ag...

nucleolar organizer regions (nor) are defined as nucleolar components containing a set of argyrophilic proteins which are selectively stained by colloidal silver nitrate staining. although studies have shown that the number of nor dots or particles is directly related to the rapidity of cell proliferation in cancer cells, prognostic or diagnostic value of nor remains controversial. the aim of t...

background: tuberculosis continues to be a serious public health problem causing nearly three million deaths per year all over the world. despite major improvement in diagnosis, it is not possible to control the disease in the absence of surveillance treatment, and follow-up programs. objectives: this research was designed to study the frequency of mycobacterium tuberculosis among specimens ref...

herpetosiphon giganteus is a filamentous gliding bacterium. gliding motility is the movement of the cells over surfaces without the aid of flagella. the mechanism responsible for bacterial gliding motility has not been known and there are only a few data on herpetosiphon giganteus. the aim of this study was to observe the ultrastructure and negative staining of isolated strains of herpetosiphon...