INTRODUCTION Plasmacytomas are malignant tumors characterized by abnormal monoclonal proliferation of plasma cells. They originate in either bone--solitary osseous plasmacytoma, or in soft tissue--extramedullary plasmacytoma (EMP). EMP represents less than 1% of all head and neck malignancies. CASE REPORT We presented a case of EMP of the nasal septum in a 44-year-old male who had progressive...

INTRODUCTION Osteoblastoma is an uncommon benign bone tumor that accounts for 1 percent of all primary bone tumors. About 30 to 40 percent of all osteoblastoma cases involve the spine. Osteoblastoma involving the nasal cavity is rare, with only 11 reported cases in the English-language literature, while only four cases of turbinate osteoblastoma have been described. CASE PRESENTATION We repor...

OBJECTIVE This study represents an attempt to simulate the complex three-dimensional airflow pattern in the human nasal passageways. MATERIALS AND METHODS In the present study the computational Fluid Dynamics (CFD) have been used. The CFD solved numerically the flow governing equations. The CFD demonstrated to be a very efficient tool for researching on nasal flow. RESULTS By means of CT sc...

Nasal obstruction caused by the inferior turbinate is a common clinical problem. There are many surgical procedures which attempt to relieve it, but all of them have associated difficulties. We describe, for the first time, a new method, namely multiple submucosal out-fractures of the inferior turbinates, which is both effective and free from serious complication.

conclusions ultrasound is recommended as the first choice when fb is located within the superficial soft tissues with no bone around it. in case of penetration of fb into deeper tissues or beneath bone, ct or cbct are recommended. otherwise, considering lower dose, cbct is preferred over ct. we can use mri if the fb is not ferromagnetic. however, ct is the first choice in emergency situations b...

The effect of physical activity in the treatment of osteopenia induced by ovariectomy was studied in 34 two-month-old Wistar female rats. Animals were divided into three groups in which two were formed by ovariectomized (OVX) animals and the other one had sham-operated animals. Group 1, active OVX'd rats; group 2, sedentary OVX'd rats and group 3, sham-operated ones (control). After three month...

The objectives were to determine the efficacy and safety of nasal salmon calcitonin 200 IU daily in the prevention of corticosteroid-induced osteoporosis. A minimized, double-blind, placebo-controlled trial was carried out in corticosteroid-treated patients with polymyalgia rheumatica. The setting was a tertiary care university-affiliated hospital and a total of 31 patients were enrolled. The p...

Understanding the properties of airflow in the nasal cavity is essential to understanding physiologic and pathologic aspects of nasal breathing. Many attempts have been made to evaluate nasal airflow patterns using the best possible analytical methods available at the time. Recently, digital particle image velocimetry (DPIV) and computational fluid dynamic methods have been applied to this area...