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Results for “Maxillary Sinus Neoplasms”

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At least 19 recordsLinked to original sources
PubMed1997

Non-Hodgkin's lymphoma of the paranasal sinuses. Report of two cases.

Lymphoma of the paranasal sinuses is relatively rare compared to the occurrence of carcinoma in the same region. The diagnosis is often missed at the early stages of the disease. Two cases of primary extranodal lymphoma of the maxillary sinus are reported. The diagnosis of these malignancies is emphasized.

Aged↗
PubMed1990

Exposure-response relationships between woodworking, smoking or passive smoking, and squamous cell neoplasms of the maxillary sinus.

A case-control study of squamous cell neoplasms of the maxillary sinus was performed in Hokkaido during 1982-86, with 169 cases and 338 controls matched for sex, age, and residence. The data were analyzed by a stepwise forward-selection method based on a conditional logistic-regression model without interaction terms, log-likelihood ratio tests, and chi-square tests for trend. Statistically significant linear trends were observed for associations between the risk of squamous-cell maxillary-sinus neoplasms and the duration of woodworking among men, the daily or lifetime amount of smoking among men, and the number of smokers in the household as an index of domestic exposure to cigarette smoke among women.

Adult↗
PubMed1991

Beware of malignant lymphoma masquerading as facial inflammatory processes.

Considerable difficulty exists in diagnosing some sarcomas, lymphomas, and carcinomas that develop in the head and neck. Frequently these malignancies appear clinically as masquerading inflammatory disease processes. Recognition of these rare lesions usually occurs only after the inflammatory-like symptoms have failed to respond to conventional management, necessitating a more extensive evaluation and even repeated biopsies. The use of special stains, immunohistochemical studies, electron microscopy, and immunofluorescence techniques may still produce an inconclusive histopathologic diagnosis. This case report documents a rare extranodal malignant lymphoma of the right maxillary sinus that mimicked an odontogenic infection with superimposed chronic rhinosinusitis in a 19-year-old sailor. The cause of his chief complaint and presenting symptoms challenged the astuteness of clinicians, surgeons, and histopathologists on two continents and the high seas. Clinicians should maintain a high index of suspicion for malignancy when inflammatory-like lesions fail to respond to the usual appropriate management. Indications for early biopsy of suspect lesions and aggressive follow-up are emphasized.

Adult↗
PubMedDate not supplied

Maxillary sinus inflammatory disease: ultrasound compared to computed tomography.

Fifty-six patients (age range, 15-79 yr, average, 37.0+/-18.5 yr), with a clinical and/or radiological diagnosis of acute maxillary sinusitis, were prospectively studied with ultrasound (US) and computed tomography (CT). The imaging finding which supported the diagnosis of acute sinusitis with US was the identification of the hyperechoic posterior antral wall through the hypoechoic inflammation. The findings were compared to CT (3 mm axial sections). The sensitivity of US for maxillary sinus disease was found to be 66.7% and the specificity was 94.9%, which were similar to the plain film ones (65.2 and 96.8%, respectively). The results of the present study suggest US as the method of first choice for acute sinusitis of the maxillary antra, particularly for children and pregnant women.

Acute Disease↗
PubMed1996

The use of micro-titanium mesh for maxillary sinus wall reconstruction.

Operations on the maxillary sinus can lead to extensive bony defects of the facial and laterodorsal walls of the sinus. If there is no autogenous bone material available, the problem is to find a suitable substitute for reconstruction. We examined the suitability of micro-titanium mesh for reconstruction of the walls of the maxillary sinus. In 13 adult patients large defects of the walls of the maxillary sinus were reconstructed using micro-titanium mesh. Indications for operation were tumours, large dental-type cysts, traumatic bone loss and chronic inflammation in sinuses which had been previously operated on. Clinical and radiological examinations were carried out immediately after surgery and after a 3 months interval. Control by sinuscopy was performed in all patients. Great importance was attached to the following aspects: 1. correctly shaped reconstruction of the maxillary sinus 2. prevention of soft tissue prolapse into the sinus 3. aeration of the maxillary sinus 4. preservation of the facial contour

Adolescent↗
PubMed1999

A-mode ultrasound in the diagnosis of chronic polypous sinusitis.

A-mode ultrasound (A-US) is a simple, non-invasive and non-ionizing method for detecting fluid or even mucosal swelling in inflamed maxillary and frontal sinuses. A-US has been shown to be a quite reliable tool in the diagnosis of acute maxillary sinusitis. However, controversy still exists over the reliability of A-US in detecting fluid retention or mucosal swelling in patients suffering from chronic polypous rhinosinusitis or in transantrally operated maxillary sinuses. We have compared the results of maxillary sinus A-US with computed tomography (CT) images in a selected series of chronic polypous rhinosinusitis comprising 40 patients. Fluid retention was seen in 20 of 79 maxillary sinuses on CT scanning. Only 6 of these 20 retentions were detected with A-US. There were 11 false positive findings. In six of these cases a back-wall echo was received through polypoid masses in the sinus. Mucosal swelling was also difficult to diagnose. The results of A-US were not easily reproduced; only in 50% of cases were identical results obtained by two investigators. We do not recommend the use of A-US to diagnose fluid retention or mucosal swelling in a patient with chronic mucosal changes in the maxillary sinus or if surgery has been performed on the anterior wall of the maxillary sinus.

Adult↗
PubMed1992

Chronic maxillary sinusitis associated with the mushroom Schizophyllum commune in a patient with AIDS.

Invasive infection with fungi of the Basidiomycota (rusts, smuts, toadstools, mushrooms, and puffballs) is extremely rare. We report such an infection in a patient with human immunodeficiency virus disease who presented with chronic maxillary sinusitis associated with the mushroom Schizophyllum commune. The organism was isolated from the surgical drainage material, and septate hyphae were seen invading the maxillary submucosa. The limited literature on this subject is reviewed.

Acquired Immunodeficiency Syndrome↗
PubMed1998

Effect of systemic pretreatment with betamethasone on the bacterial flora, inflammatory response, and polyp formation in experimentally infected rabbit maxillary sinus mucosa.

To investigate possible effects of corticosteroids on polyp formation and local bacterial colonization, pneumococcal sinusitis was experimentally induced in rabbits pretreated with betamethasone or saline. After 7 days, macroscopic polyps were counted post-mortem and on histologic slides after serial sectioning. Histologic sections were also examined with light microscopy. Macroscopic polyps were significantly fewer in animals given betamethasone, while there was no difference regarding the number of microscopic polyps. Ingrowth of pathogenic microorganisms was found in five of eight rabbits given placebo but in none of the animals treated with corticosteroids (P < 0.05). The reduced number of pathogenic strains in these animals may be explained by a better-preserved local host defense. The lower number of macroscopic polyps in the same animals could be because of a delayed mucosal repair and subsequent polyp formation.

Animals↗
PubMed1993

Formation of mucosal polyps in the nasal and maxillary sinus cavities by infection.

Unilateral maxillary sinusitis was experimentally induced in New Zealand White rabbits with Streptococcus pneumoniae serotype 3, Bacteroides fragilis NCTC 9343, and Staphylococcus aureus V8. In another group of rabbits, sinusitis was induced by blocking of the sinus ostium only. Bacteriologic and light microscopic analysis was performed after 5 days to 1 month. Granulation-like polyps developed after deep mucosal inflammatory trauma initiating fibroblast proliferation, angiogenesis, and epithelial migration to cover the polyp. In regions of a more superficial trauma-characterized by epithelial desquamation and fibroblast growth-proliferation and differentiation of basal cells resulted in the formation of microcavities dissecting off edematous polyps. Polyps could be found in all sinusitis groups, irrespective of inducing agent. The cellular events of polyp formation appear to be the result of a continuous inflammatory reaction and are not directly related to the presence of a certain microorganism. Instead, the potential of any microorganism to induce a deep mucosal trauma or epithelial desquamation seems essential for its ability to initiate polyp formation.

Animals↗
PubMed1997

Radiological findings in the maxillary sinuses of symptomless young men.

The maxillary sinuses were examined radiologically by occipitomental projection (Waters' view) in 404 conscripts without any symptoms of sinusitis. Abnormalities were found in 188 (23.3%) of all 808 sinuses, the most common being mucosal thickening of > 6 mm (12.3% of the sinuses), cysts or polyps (7.2%), and completely opacified sinus (3.3%). Normal x-ray findings were more common in the conscripts examined during the summer months and mucosal thickening was more frequently encountered in winter than in summer. Nasal bacteria were studied in 100 cases. Findings of normal bacterial flora and of pathogenic bacteria were equally frequent among subjects with normal sinus x-ray (score 0 and 1) and subjects with severe abnormalities (scores 3-6), but mucosal cysts (score 2) was more often combined with pathogens in the nose. Mucosal thickening was more often observed in non-allergic than in allergic persons; thus allergy did not seem to increase radiological abnormalities. Of young men engaged in outdoor activities, about one fifth seem to have significant chronic mucous membrane abnormalities in the maxillary antra without clinical symptoms. In 1-2% of cases secretion is detected in the maxillary sinus indicating a subclinical sinusitis.

Adult↗
PubMed1997

[CT diagnosis of maxillary sinus diseases].

To evaluate the diagnostic value of CT scan in maxillary sinus diseases, CT findings in 100 cases of maxillary sinus diseases, which included 64 inflammatory diseases; 14 benign tumors; 17 malignant tumors and 5 fractures The result showed that the accordance rate between CT scan and operative diagnosis was 95.0%; between CT scan and pathology was 92.6%(88/95). It is concluded that CT scan showed a better visualization of maxillary sinus than X-ray tomogram.

Adolescent↗
PubMedDate not supplied

[Pansinusitis secondary to inflammatory myofibroblastic tumor].

Inflammatory myofibroblastic tumors are aetiologically enigmatic and biologically unpredictable lesions. The lungs are the organs of apparent predilection. These tumors have also been documented in a number of extrapulmonary sites including head and neck. Paranasal location is rare. We report a case of a maxillary location in a 10 years and 10 months old girl initiated as an acute pansinusitis.

Child↗
PubMed1992

Unusual presentation of verrucous carcinoma of maxillary antrum.

Verrucous carcinoma is a rare type of squamous cell carcinoma that is most often seen in the oral cavity and larynx. This paper describes a case report of a rare tumor with an unusual presentation. This patient presented with recurrent pyoceles and was diagnosed by chance. Carcinoma of maxilla is rarely diagnosed until the bony walls are eroded. This condition should be kept in mind in patients presenting with recurrent pyocele and a biopsy carried out from the maxilla.

Carcinoma, Papillary↗