SciCombinator

Discover the most talked about and latest scientific content & concepts.

Concept: Maxillary sinus

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Computed tomography (CT) is the current gold standard imaging for chronic rhinosinusitis (CRS) but is limited by cost, risk of radiation, and difficulty of being performed in the typical outpatient primary care setting. We describe the novel use of a low-cost, handheld technology to deliver an intraoral near-infrared (NIR) wavelength light to optically image the maxillary sinuses. Digital images were collected for subjects presenting with sinus disease using an intraoral NIR light source for transillumination of the maxillary sinuses, captured by a modified digital single-lens reflex camera. Light intensity contrasts were enhanced using computer analysis and subsequently compared to CT findings. NIR illumination produced unique patterns reflecting different disease states: normal sinus anatomy, mild sinus disease and/or mucosal thickening, and complete opacification of the sinus. Current results suggest that NIR imaging may facilitate the diagnosis of sinusitis in the outpatient setting with minimal cost and no radiation exposure.

Concepts: Optics, Light, Sinusitis, Digital photography, Maxillary sinus, Digital single-lens reflex camera, Single-lens reflex camera, Leica Camera

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Segmental, depressed fractures of the posterolateral maxillary sinus may occur as a result of trauma to the masticator space, previously described in association with mandibular fractures. The authors hypothesize that the fracture is due to a transient increase in pressure in the masticator space (blow out) and therefore should be seen in association with other regional fractures.

Concepts: Bone fracture, Fracture, Sinusitis, Maxillary sinus, Terminal Reality, Blow Out, Cliff Curtis

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Inverted papillomas (IPs) are benign neoplasms, most commonly arising from the mucosal lining of the maxillary sinus. IPs can have single or multifocal sites of attachment. Although pedicle location is an important factor to consider in surgical planning, it is less clear whether the location or number of IP attachment sites hold any prognostic value. Herein, we aimed to determine the prognostic significance of the number and location of attachment sites of IPs originating from the maxillary sinus when managed by a pure endoscopic approach.

Concepts: Cancer, Mucous membrane, Sinusitis, Benign tumor, Maxillary sinus, Papilloma

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Mucoepidermoid carcinoma of the maxillary sinus is a rare malignancy of the head and neck. The location of this tumour near vital structures and its large size at presentation makes surgical resection with negative margins challenging. In incurable cases, relief from symptoms such as epistaxis may be achieved with radiation therapy. We present a case of mucoepidermoid carcinoma of the maxillary sinus that was effectively palliated with a short course of radiation therapy, achieving complete cessation of bleeding, decrease in tumour size, and long term control. We surveyed the literature on mucoepidermoid carcinomas and propose that some tumours may be particularly radiosensitive, benefiting from even short courses of radiation therapy.

Concepts: Time, Medicine, Cancer, Oncology, Chemotherapy, Anatomical pathology, Head and neck cancer, Maxillary sinus

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It is complicated to select an appropriate sinus floor elevation and the procedure for sinus floor elevation lacks of consensus. Sinus contour plays an important role in choosing a surgery approach. But there are still no published articles revealing the influence of sinus contours to sinus floor elevation surgery.

Concepts: Sinusitis, Maxillary sinus, Contour line

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Maxillary sinus mucocele is an unusual clinic entity (incidence of 3-10%), represented by mucous secretion lined by respiratory stratified pavemented epithelium and its origin is mainly secondary to infections, inflammations, surgery, trauma or neoplasia.

Concepts: Hospital, Sinusitis, Mucus, Maxillary sinus

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Schneiderian membrane perforation is one of the most common intra-surgical complications occurring during maxillary sinus elevation procedures. The management of these perforations is essential to accurate treatment prognosis. Several techniques have been shown to repair sinus membrane perforation using different materials such as connective tissue, fat pads, and resorbable collagen membranes. This short communication presents a modification to the classical sinus perforation repair technique using a resorbable collagen membrane. The hammock approach is based on enhancing the stabilization of the collagen membrane by suturing the membrane to both the buccal and palate plates with double perforations.

Concepts: Bone, Blood, Collagen, Sinusitis, Cartilage, Connective tissue, Maxillary sinus, Ehlers-Danlos syndrome

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The aim of this animal study is to evaluate, by histomorphometric analysis, new bone formation in rabbit maxillary sinuses with Bio-Oss and demineralized particulate human tooth graft.

Concepts: Sinusitis, Maxillary sinus

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During the physiological ageing process atrophy of the alveolar bone appears in vertical direction. This bone resorption causes pushing the limits of the maxillary sinus at the expense of a degraded bone. The sinus volume increases due to the facial development in children and adolescents or during the ageing process due to the loss of teeth and bone mass. The main aim of this study is to determine the sinus shape and sinus floor morphology related to age.

Concepts: Senescence, Sinusitis, Gerontology, Anatomy, Ageing, Maxillary sinus