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Introduction  Neck masses include a wide variety of diagnostic possibilities, with more than 60 etiologies that depend on clinical aspects such as age, location and time of disease progression. The interview and physical examination guide research that cross the neck masses in pediatric patients in 3 groups: infectious / inflammatory, and neoplastic embryonic remnants. The aim of this study was...

background: regarding the significance of abdominal masses in children, we aimed to identify the pathology of masses according to the age and sex groups. materials and methods: we retrospectively reviewed pathological reports of 461 patients with abdominal mass that underwent resection or biopsy during the study period (25 years). results: one hundred and eighty six cases (40%) were non-neoplas...

background patients presenting with a mass require tissue biopsy for histological diagnosis and treatment. fine needle aspiration (fna) is offered as an atraumatic, well tolerated, and inexpensive method for obtaining a biopsy from these lesions. objectives in this study we evaluated the accuracy of fna as an atraumatic method among patients with nonthyroidal masses for diagnosis of neoplastic ...

This paper deals with the problem of the instability regions of a free-free uniform Bernoulli beam consisting of two concentrated masses at the two free ends under the follower and transversal forces as a model for a space structure. The follower force is the model for the propulsion force and the transversal force is the controller force. The main aim of this study is to analyze the effects of...