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The development and pathologic processes that influence maxillary sinus pneumatization.

The maxillary sinus is universally described as a pyramidal-shaped cavity in the maxilla. Hypoplasia, which can occur unilaterally or bilate … enlargement of the sinus is uncommonly encountered, and is produced by air (pneumocele) and mucus (mucocele) entrapment, or by benign tumors which have arisen in the sinus or adjacent maxilla and have grown intracavitarily, with the sinus walls expanding and remodeling to accommodate them. Reduction in size and volume is more frequent. Heredo-familial syn …

[Complications of endonasal surgery of the paranasal sinuses. Incidence and strategies for prevention].

BACKGROUND: Complications of endonasal surgery continue to occur despite improved optical instruments and surgical techniques. The clinical … ntal sinus surgery according to Ritter-Jansen and Lathrop-was found in 80% of these patients. Of 12 mucoceles of the frontal sinuses, 10 had developed after extranasal procedures whereas two developed spontaneously. CONCLUSION: This analysis shows that the occurrence of severe intraoperative complications can be minimized if certain guidelines are followe …

Oral Graft-Versus-Host Disease: A Pictorial Review and a Guide for Dental Practitioners.

IntroductionGraft-versus-host disease (GVHD) is a complication of haematopoietic stem cell transplantation (HSCT). GVHD may also develop following solid transplants or blood transfusions if white blood cells are transferred. GVHD affects multiple organs, including the oral tissues.ObjectiveThis pictorial review provides a background of GVHD to dental practitioners, describes the most common oral manifestations of GVHD and highlights the main treatment modifications needed to deliver dental care to patients with GVHD.MethodsA narrative review enhanced with clinical photographs.ResultsAcute GVHD

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… Ruptured mucoceles may cause mucosal erosions and become sensitive. Unlike the mucoceles which often develop in otherwise healthy young individuals, mucoceles occurring in cGVHD are smaller, appear in clusters and are not preceded by local trauma. … Importantly, removal of ‘mucocele’ from the matrix reflected the fact that there was no clinical correlation between the erythema/ulceration/lichenoid scores and the mucocele score. This may be explained by a pathogenesis for mucoceles that is not related to mucosal damage. …

Comparison of CT and MRI features in sinusitis.

OBJECTIVE: To correlate the features of inflammatory changes in the paranasal sinuses on magnetic resonance imaging (MRI) with computed tomography (CT). METHODS AND PATIENTS: One hundred and fourteen patients with histologically proven nasopharyngeal carcinoma (NPC) were staged with both CT and MRI. All CT and MRI images of patients with mucosal thickening but no tumour involvement of the sinuses were retrospectively analysed. RESULTS: There were inflammatory changes in 36 maxillary, 21 sphenoid and 16 ethmoid sinuses. These changes include mucosal thickening, retention cysts, retained secre

Isolated left-lobe metastatic hepatic abscess due to portal pyemia from microperforated ascending colon carcinoma: a rare case report.

INTRODUCTION AND IMPORTANCE: Liver abscess-like lesions are commonly managed as primary hepatobiliary infections; however, colorectal cancer … th suspected microperforation, pericolic lymphadenopathy, ileocolic vein thrombosis, an appendiceal mucocele, and a left-lobe subcapsular hepatic collection with peripheral enhancement and internal gas. A presumed gastric mass was later explained intraoperatively by extrinsic compression from the ruptured collection. Laparotomy with drainage and right hemi …

The effect of the presence of the accessory maxillary ostium on the maxillary sinus.

This study was conducted to investigate the presence of the accessory maxillary ostium and its effects on the maxillary sinus, and the concurrent occurrence of morphological variations of neighboring anatomical structures. This study was performed in a tertiary referral center. This is a cross-sectional retrospective study that evaluated coronal CTs of patients to determine the frequency of the accessory maxillary ostium and investigated any simultaneous morphological variations in neighboring anatomical structures. The presence of the accessory maxillary ostium (AMO) plus any concurrent morph

A retrospective study of oral and maxillofacial biopsy lesions in a pediatric population from southern Taiwan.

This is a retrospective study of biopsied oral lesions (N = 534) in a pediatric population (0-15 years old) in southern Taiwan. In this study, we included 6% of the 9672 biopsies performed from 1985 through 1996. The lesions were divided into three groups according to patients' ages, 0-5 years old; 6-10 years old; and 11-15 years old The majority of the samples were from the oldest age group (273/518). With the exclusion of normal tissues (N = 26), 518 samples were classified into four categories: inflammatory lesions, cystic lesions, tumor or tumor-like lesions, and other lesions. The largest

Use of a porcine dermal collagen graft (Permacol) in parotid surgery.

Our aim was to present the results of the use of porcine dermal collagen graft (Permacol) in the prevention of Frey's syndrome and face-contouring aesthetic deformities after operations on the parotid. We treated 19 patients with parotid tumours. After resection, a Permacol sheet was applied to the perimeter of the tissue deficit so that it was fully covered, and was sutured firmly. This technique produced satisfactory aesthetic results with good facial contouring in all patients. It also protected the exposed parotid nerve plexus, and none of the patients developed Frey's syndrome. Permacol p

Use of anteriorly based pericranial flap in frontal sinus obliteration.

OBJECTIVE: In an era of endoscopic sinus surgery, frontal sinus obliteration continues to remain an important treatment option in chronic frontal sinus disease. Numerous avascular obliterative materials including fat, muscle, cancellous bone, and hydroxyapatite have been used in this procedure. In this article, we describe a vascularized anteriorly based pericranial flap to obliterate frontal sinus. STUDY DESIGN: Retrospective chart review of patients referred to tertiary care hospital between 1996 and 2003. METHODS: Records of the patients who underwent this procedure were reviewed. Demogra

Paranasal sinuses and nasopharynx CT and MRI.

Neoplastic disease of the nose, paranasal sinuses, the nasopharynx and the parapharyngeal space requires thorough assessment of location and extent in order to plan appropriate treatment. CT allows the deep soft tissue planes to be evaluated and provides a complement to the physical examination. It is especially helpful in regions involving thin bony structures (paranasal sinuses, orbita); here CT performs better than MRI. MRI possesses many advantages over other imaging modalities caused by its excellent tissue contrast. In evaluating regions involving predominantly soft tissue structures (ec

Cone-beam computed tomographic evidence of the association between periodontal bone loss and mucosal thickening of the maxillary sinus.

BACKGROUND: The aim of the present study is to determine the relationship between dental findings and mucosal abnormalities of the maxillary sinus among dental patients, using cone-beam computed tomography (CBCT). METHODS: Two hundred fifty CBCT scans of dental patients were studied. Dental findings of the upper posterior teeth, including periodontal bone loss, periapical lesions, and root canal fillings, were assessed. The presence of mucosal thickening and mucosal cysts of the maxillary sinus was recorded. Logistic regression analysis was used to determine the influence of periodontal bone

Comparison of oral chronic graft-versus-host disease characteristics between patients with malignant and non-malignant hematopoietic disorders.

ObjectivesTo characterize and compare the clinical manifestations of oral chronic graft-versus-host disease (cGVHD) in patients with malignant hematopoietic disorders versus those with non-malignant hematopoietic disorders, and to analyze associated risk factors.Materials and methodsDetailed examinations of the oral cavity were conducted in patients with malignant hematopoietic disorders (n = 52) and non-malignant hematopoietic disorders (n = 56) who developed oral cGVHD following allogeneic hematopoietic stem cell transplantation (allo-HSCT). The severity of oral cGVHD was scored, and logisti

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… None 0 1–5 mucoceles 1 5–10 mucoceles 2 Over 10 mucoceles 3 Table 1 Scoring criteria of oral manifestations among oral cGVHD patients Mucosal change | No evidence of cGVHD | Score | Mild | Score | Moderate | Score | Severe | Score Erythema | None | 0 | Mild erythema or moderate erythema (< 25%) | 1 … | None | 0 | 1–5 mucoceles | 1 | 5–10 mucoceles | 2 | Over 10 mucoceles | 3 Statistical analysis SPSS 22.0 statistical software was used for data analysis. …