Most common tumors of the spleen are hematologic and lymphoid malignancies. Non-lymphoid and non-hematologic tumors of the spleen are very rare, the most common of which are vascular tumors. This group of tumors in the spleen is composed of heterogeneous tumors such as hemangioma, angioendothelioma (AE), littoral cell angioma, and angiosarcoma. There are several histologic forms of AE such as e...

Two cases of multiple concomitant CNS tumors of different histologic types are presented.  One was a case of neurofibromatosis type 2 (NF2) with 6 CNS tumors, and the other a case of 4 CNS tumors without any evidence of NF. To our knowledge, there is no report of concomitant occurrence of 6 CNS tumors in the medical literature. Neuroradiological  and operative findings are illustrated and discu...

Cytomegalovirus (CMV) is a widespread pathogen that is found in milk, saliva, urine, cervical secretions, and semen fluid. It is supposed that CMV is a risk factor for breast cancer. The aim of this study was to determine the frequency of CMV among benign and malignant breast tumors. Paraffin embedded breast carcinoma (n=24) and fibroadenoma (n=24) samples were collected from Toos and Firoozgar...

Background:   Although the majority of soft tissue masses are benign, it is important to consider malignancy in differential diagnoses. Because most soft tissue sarcomas present as a painless mass, clinicians must watch for signs suggestive of malignancy, including large size, rapid growth, and site deep into the deep fascia.The purpose of this study was to determine the relative prevalence acc...

Non-epithelial, benign extracranial neurogenic tumors of the nasal cavities are reported in the literature with extreme rarity. These tumors differ from the more common congenital gliomas, encephaloceles, etc. in that they sometimes are detached from the brain tissues. These tumors have intracranial origins. They are congenital or acquired and may involve any of the nerves inside the nose....

non-epithelial, benign extracranial neurogenic tumors of the nasal cavities are reported in the literature with extreme rarity. these tumors differ from the more common congenital gliomas, encephaloceles, etc. in that they sometimes are detached from the brain tissues. these tumors have intracranial origins. they are congenital or acquired and may involve any of the nerves inside the nose. thes...

two cases of multiple concomitant cns tumors of different histologic types are presented.  one was a case of neurofibromatosis type 2 (nf2) with 6 cns tumors, and the other a case of 4 cns tumors without any evidence of nf. to our knowledge, there is no report of concomitant occurrence of 6 cns tumors in the medical literature. neuroradiological  and operative findings are illustrated and discu...

Background: Neonatal tumors are usually prenatally diagnosed or within the irst 30 days of life. The true incidence ofneonatal tumors is unknown as a great number of pregnancies with a prenatally diagnosed mass result in stillbirth ormiscarriage. Most solid neonatal tumors are benign whereas less than 50% of neonatal neoplasms are malignant;however, some tumors with malignant ...