نتایج جستجو برای: paranasal sinus tumors
تعداد نتایج: 219593 فیلتر نتایج به سال:
Bilateral paranasal sinus mucoceles are rare. To date, only 5 cases have been reported in the English-language literature. All were bilaterally symmetrical. We present a patient with bilateral asymmetric mucoceles. This patient had a symptomatic mucocele of the right ethmoid sinus with orbital extension and an asymptomatic mucocele involving the left maxillary sinus with retroorbital extension....
Schwannomas of the paranasal sinus are uncommon. Less than 4% of schwannomas involve the nasal cavity and paranasal sinuses, even less in the pediatric age group. A case of schwannoma arising in maxillary sinus in a 2.5-year-old Chinese boy is reported. The basis for discussion of this case is the exceptional rarity of sinonasal schwannoma in pediatric patients.
Sphenochoanal poyp is rare nasal mass that originates from sphenoid sinus. In anterior rhinoscopy it may be mistaken with antrochoanal polyp. CT of paranasal sinuses and nasal endoscopy has increased diagnostic accuracy. Simple polypectomy without removal of intra sinus mass is associated with increased risk of recurrence. Treatment of sphenochoanal polyp must include removal of intrasphenoid...
Invasive plasmacytoma appearing as a mass in the paranasal sinuses developed in two patients after cardiac transplantation. Radiographic findings included a sinus mass with bony invasion and expansion. The findings were radiographically indistinguishable from common malignant neoplasms and aggressive infectious processes. Malignant plasmacytoma should be considered in the differential diagnosis...
In normal upper airways, nitric oxide is generated by the paranasal sinus epithelium and then diffuses into the nasal cavities. This study examined whether or not nasal NO concentration is affected by paranasal sinus inflammatory diseases. The influence of obstruction (nasal polyposis) and/or inflammation (allergy or chronic sinusitis) of the paranasal sinuses on nasal NO concentration was eval...
Mucocele of the paranasal sinuses is a distinct clinicopathologic entity in which there is obstruction of the sinus cavity outflow tract, resulting in expansion of the sinus walls. The histologic features are quite nonspecific, requiring clinical, radiologic, and pathologic correlation. Most of these lesions result from increased pressure in the sinus due to sinus outlet obstruction, usually as...
Metastatic tumors in the nose and paranasal sinuses are rare. In the present paper, a 68 year old man with metastatic renal cell carcinoma to the left frontoethmoidal region 4 years after initial nephrectomy is presented ..Pathologic diagnosis of the case was Clear Cell Carcinoma. The patient complained of mild nasal obstruction and intermittent epistaxis, but the significant symptom was bulg...
Nose and paranasal sinuses tumors are rare but their clinical signs and symptom,s are nonspecific and their diagnosis usually established with delay. The purpose of this study was determination of epidemiological status of these tumors in Hamadan. Patients’ records in Hamadan ...
Several articles have been written about hyper infl ated sinus structures. Never before, however, a complete overview of all possible pressure induced variations of sinus anatomy have been published. The aim of this study was to make an inventory of the most common CT signs of hyper infl ated paranasal sinus structures. During a period of 2 years all CT-scans of the paranasal sinuses made in an...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید