abstract background: a tumefactive lesion of central nervous system (cns) is defined as a mass-like lesion with a size greater than 2 cm in brain (magnetic resonance imaging) mri. neuroimaging may help to distinguish the nature of a tumefactive lesion and therefore can prevent an unnecessary brain biopsy. method: in this paper, we have emphasized on determining the nature of a cns tumefactive l...

by increasing number of vessels. Salivary gland tumors are uncommon and their overall incidence is about 3 per 100000 per year. Salivary gland hemangioma makes up 1 % of all salivary gland tumors. Trismus resulting from parotid hemangioma is so rare. The patient was a 6-month-old boy with a huge lesion in his right parotid who referred to Shahid sadoughi hospital of Yazd, Iran. The lesion appea...

On the basis of a seesaw-type mass matrix model for quarks and leptons, Mf ≃ mLM F mR, wheremL ∝ mR are universal for f = u, d, ν and e (up-quark-, down-quark-, neutrinoand charged lepton-sectors), and MF has a form [(unit matrix)+(democratic-type matrix)], neutrino masses and mixings are investigated. It is tried to understand a large νμ-ντ mixing, i.e., sin 2 2θ23 ∼ 1, with mν1 ≪ mν2 ∼ mν3, w...

We report a patient who was admitted to the department of medicine with palpitation, dyspnea and left flank pain, Chest X-ray revealed a mass in the left lung. The lesion was evaluated as a pulmonary tumor, with a high suspicion of malignancy. Intravenous urography, sonography, and CTscanning revealed a thoracic kidney at the location previously thought to be a lung mass. This is the firs...

SUMMARY Tuberculoma of the central nervous system is one of the rare and unusual form of Tuberculous in Iranian children, that often present with mass lesion. This is report A 14 months old boy, admitted because ahd fever, irritability, anorexics had right side hemiplegia for two months. Positive finding was tuberculin test and CT brain scan with 2 hyperdenc mass (Ring Shaped) in the posto-m...