Cutaneous round cell tumors have been classified as mast cell tumor (MCT), histiocytoma (HCT), lymphosarcoma, undif-ferentiated round cell tumors and occasionally rhabdomyosarcoma in veterinary medicine. An adult cock (Gallus domesticus) showing a large solitary integument mass raised on dorso bilateral of cervical part, extending to intercapsular and cranial mid part of the back was referred t...

abstract   synchronous upper urinary tract tumor and superficial bladder tumor are uncommon. this is a report of a 62- year- old man presented with episode of painless gross hematuria and flank pain. we worked him up and found a left renal mass and bladder lesion. he underwent nephrectomy and tur-bt, and the pathology report of both showed a high grade urothelial transitional cell carcinoma. th...

background: tumor markers are substances, which quantitatively changes in serum, during the tumor development, one such tumor marker is serum β2-microglobulin (β2-m). the aim of this study was to establish the role of β2-m as a biochemical parameter for diagnosis and prognosis of oral carcinoma by estimation of serum β2-m levels in potentially malignant lesions, conditions, and oral squamous ce...

twenty five cases of minor saliva ry glands tumors which was observedat the department of pathology of university of tehran from 1967 to 1972 are presented and discussed . benign mixed tumor is the most common and the only benign lesion in this series of 75 patient with intraoral salivary gland tumor. there were eleven malignant type and hence about 44% of all the tumor arc malignant and it cor...

malignant peripheral nerve sheath tumor (mpnst) is a rare malignant tumor that develops either from a preexisting neurofibroma or de novo. the cell of origin is believed to be the schwann cell and possibly other nerve sheath cells. in this report, we describe a rare case of mpnst that arise from the socket of second left maxillary molar that has been already extracted in a young man. he was ref...

the effect of natural killer (nk) cells and lymphokine activated killer ( lak) cells was studied on a group of human melanoma cell lines. peripheral blood from healthy volunteers was utilized as a fresh source of natural killer cells and rhi l-2 for producing lak cells. the cytotoxicity of effector cells was quantified using a 4 hour si determining the density of antigen expression on tumor cel...

the proliferation of hepatocellular carcinoma (hcc) cells is one of the leading causes of liver cancer mortality in humans. the inhibiting effects of matrine on hcc cell proliferation have been studied, but the mechanism of that inhibition has not been fully elucidated. since, apoptosis plays an important role in hcc cell proliferation. we examined the apoptosis-inducing effect of matrine on tu...

calcifying fibrous tumor (cft) is a rare mesenchymal tumor, affecting children and young adults with a predilection for the soft tissue and the abdominal cavity. cft of the tubular gastrointestinal tract is very rare with less than 20 cases of gastric cfts reported in english literature. this benign hypocellular fibrosclerotic calcifying lesion can resemble other spindle cell tumors particularl...

Metastasis describes the ability of a tumor to invade normal tissue and generate secondary tumors at sites distant from the primary tumor. The mechanism responsible for the inhibition of tumor metastasis by different agents is at least partly associated with the ability to interfere with cellular functions such as adhesiveness, motility and invasiveness. Certainly effective treatment of metasta...

Cancer immunotherapy refers to any intervention that leverages the immune system to eliminate a malignancy. Successful cancer immunotherapies generate an anti-cancer response that is systemic, specific, and durable and overcome to the primary limitations of traditional cancer treatment modalities. In this review paper, the effective methods in immune system to treat cancer, such as immunosuppre...