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Data and Picture Interpretation Stations: Cases 1–45
Published in Peter Kullar, Joseph Manjaly, Livy Kenyon, Joseph Manjaly, Peter Kullar, Joseph Manjaly, Peter Kullar, ENT OSCEs, 2023
Peter Kullar, Joseph Manjaly, Livy Kenyon, Joseph Manjaly, Peter Kullar, Joseph Manjaly, Peter Kullar
Dental procedures or periodontal/periapical disease in the maxillary molar teeth can breach the mucoperiosteum of the maxillary sinus (the Schneiderian membrane), which consequently impairs the mucocilary function and causes bacterial infection and inflammation.
Sinonasal tumours
Published in Neeraj Sethi, R. James A. England, Neil de Zoysa, Head, Neck and Thyroid Surgery, 2020
Yujay Ramakrishnan, Shahzada Ahmed
A variety of sinonasal papillomas originate from the Schneiderian membrane. Based on microscopic appearances they are classified into inverted papilloma (endophytic growth), fungiform (exophytic) and oncocytic papilloma.
Histopathologic Classification of Human Sinonasal Tumors
Published in Gerd Reznik, Sherman F. Stinson, Nasal Tumors in Animals and Man, 2017
The reasons for significant differences in the pathology of these two adjacent regions may include several factors. Their embryologic origins are different, with the sinonasal mucosa arising from an ectodermal invagination which forms the olfactory epithelium and the larger area of respiratory epithelium (sometimes called the Schneiderian membrane in the sinonasal location). The nasopharyngeal lining is endodermal in origin. The border between the two areas is the level of the posterior edge of the nasal septum and includes of course the posterior choanal openings.
Platelet rich plasma in oral and maxillofacial surgery from the perspective of composition
Published in Platelets, 2021
Eduardo Anitua, Sofía Fernández-de-Retana, Mohammad H. Alkhraisat
Regarding the application of P-PRP, 14 studies were included. The evidence obtained from observational studies evaluating the efficacy of P-PRP applied alone [61] or in combination with other biomaterials [62], reported significant bone gain, together with high dental implant survival rate, ranging from 90% to 100% at the end of the follow-up [62–65]. Moreover, P-PRP demonstrated efficacy in the management of Schneiderian membrane perforation [66]. Complementarily, seven RCTs evaluating the efficacy of P-PRP were also analyzed. In this case, two studies reported higher bone augmentation and vessel density in sinus lifts where P-PRP was added to biomaterials [67,68]. Besides, one study reported lower pain and swelling and improved functional activities when P-PRP was used as adjuvant therapy [69]. In contrast, four studies did not observe any statistical difference in terms of bone regeneration when P-PRP was added to the treatment [70–73]. Nevertheless, in two of those studies [70,71], although authors referenced the P-PRP protocol [6], later in the manuscript, it was stated that the buffy coat was included in the final product [70,71] (Figure 3).
Sinonasal (Schneiderian) papilloma of the lacrimal sac
Published in Baylor University Medical Center Proceedings, 2019
Jeremy Purser, Rachel Arffa, David Clark
The ectodermally derived ciliated respiratory mucosa that lines the sinonasal tract, called the Schneiderian membrane, gives rise to three morphologically distinct papillomas. These are referred to individually as exophytic, inverted, and oncocytic papillomas or collectively as sinonasal papillomas.1 Sinonasal papillomas are uncommon, representing only 0.4% to 4.7% of all sinonasal tumors.2 Inverted and oncocytic types are characterized by a potentially invasive nature and relatively high recurrence rates.3,4 Recurrences rates quoted in the literature range from 2% to 80%.5 This rate of recurrence depends mostly on the extent of disease, completeness of resection, tumor location, and biological variability of the tumor.6
Human papillomavirus and infiltration of CD8- and Foxp3-positive immune cells in sinonasal inverted papillomas
Published in Acta Oto-Laryngologica, 2019
Alexandra Elliot, Anders Näsman, Marit Westman, Linda Marklund, Pär Stjärne, Lalle Hammarstedt-Nordenvall
Inverted papilloma (IP), often referred to as Schneiderian papilloma, is a locally destructive benign tumor of the sinonasal mucosa with a tendency for malignant transformation and a high propensity for local recurrence [1]. IP arises from the Schneiderian membrane (the transitional sinonasal mucosa) and histologically it typically comprises both exophytic and endophytic components. The tumor is most frequently found in patients aged 50–60 years and is more common in males. Treatment consists of surgery, mostly by endoscopic sinus surgery (ESS), but sometimes in combination with open surgery. Recurrences are mainly related to non-radical surgery [2].