The implications of concomitant mucosal inflammation on clinical manifestations and outcomes of sinonasal inverted papilloma.

PURPOSE: This study examines the impact of concomitant mucosal inflammation on clinical manifestations and long-term outcomes of Inverted Papilloma (IP). METHODS: This retrospective cohort study was conducted in five tertiary medical centers. The included patients underwent an attachment-oriented surgical resection for IP with a minimum follow-up of 3 years. RESULTS: Of 185 patients with IP, 65 patients (35.1%) had synchronous mucosal inflammation with polypoid changes. The mean age was 56.7 years, and 69% were males. Most tumors originated from the maxillary sinus. Age, gender, Krouse stage, and tumor attachment site did not differ between the mucosal inflammation and IP-only groups. IP recurrence rate was twofold in the patients with mucosal inflammation (15.4% vs. 7.5%, p = 0.092). However, the difference was not significant, with a similar median time to recurrence between the two groups [15.5 (3-36) months vs. 16(6-96) months, p = 0.712]. In revision cases, IP recurred only in patients with mucosal inflammation (19% vs. 0%, p = 0.07). This group had a significantly worse 5-years recurrence-free survival than revision cases without mucosal inflammation (80.6% vs. 100%, p = 0.04). CONCLUSIONS: IP in the setting of mucosal inflammation might be associated with a higher recurrence rate, predominantly after revision surgery. Otolaryngologists should consider this during these patients' diagnosis, surgical planning, and follow-up.

[SLEEP HABIT MODIFICATION AS A POSSIBLE PREVENTION OF RECURRENT BENIGN PAROXYSMAL POSITIONAL VERTIGO].

BACKGROUND: Benign paroxysmal positional vertigo (BPPV) is effectively treated with a variety of repositioning maneuvers but one-third to one-half of patients experience recurrence, usually within 2 years after the first attack. OBJECTIVES: The aim of this study was to investigate possible prevention of recurrent BPPV by sleep habit modification. METHODS: Patients diagnosed with posterior semicircular canal BPPV (p-BPPV) were asked their preferred lying side during nocturnal sleep. Following Epley maneuver they were recommended to change their head lying side at least every 2 hours during nocturnal sleep and to come back in case of recurrence. RESULTS: A total of 266 patients were diagnosed with p-BPPV. The mean patient's age was 57 years (range 14-87 years). There were 167 patients with right p-BPPV and 99 patients with left p-BPPV; 134 (50%) patients habitually slept on the right side. Of those, 112 (84%) were diagnosed with right p-BPPV (P= 0.0006); 87 patients (33%) habitually slept on the left side; 56 of them (64%) were diagnosed with left p-BPPV (P <0.0001). Among the 45 patients (17%) who expressed no preference concerning their sleeping positions, the right versus left p-BPPV was nearly even. During the follow-up period (1-80 months, mean 41) 11 patients (4%) were diagnosed with recurrent p-BPPV. Of those, 9 had a recurrence in the same posterior semicircular canal and 2 in the contralateral one. All of them reported that they had not modified their sleep habits. CONCLUSIONS: The results of our study can shed some light on the etiology of BPPV and may be helpful in preventing recurrent BPPV by changing sleep-position habits.

Human Nasal and Lung Tissues Infected Ex Vivo with SARS-CoV-2 Provide Insights into Differential Tissue-Specific and Virus-Specific Innate Immune Responses in the Upper and Lower Respiratory Tract.

The nasal mucosa constitutes the primary entry site for respiratory viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). While the imbalanced innate immune response of end-stage coronavirus disease 2019 (COVID-19) has been extensively studied, the earliest stages of SARS-CoV-2 infection at the mucosal entry site have remained unexplored. Here, we employed SARS-CoV-2 and influenza virus infection in native multi-cell-type human nasal turbinate and lung tissues ex vivo, coupled with genome-wide transcriptional analysis, to investigate viral susceptibility and early patterns of local mucosal innate immune response in the authentic milieu of the human respiratory tract. SARS-CoV-2 productively infected the nasal turbinate tissues, predominantly targeting respiratory epithelial cells, with a rapid increase in tissue-associated viral subgenomic mRNA and secretion of infectious viral progeny. Importantly, SARS-CoV-2 infection triggered robust antiviral and inflammatory innate immune responses in the nasal mucosa. The upregulation of interferon-stimulated genes, cytokines, and chemokines, related to interferon signaling and immune-cell activation pathways, was broader than that triggered by influenza virus infection. Conversely, lung tissues exhibited a restricted innate immune response to SARS-CoV-2, with a conspicuous lack of type I and III interferon upregulation, contrasting with their vigorous innate immune response to influenza virus. Our findings reveal differential tissue-specific innate immune responses in the upper and lower respiratory tracts that are specific to SARS-CoV-2. The studies shed light on the role of the nasal mucosa in active viral transmission and immune defense, implying a window of opportunity for early interventions, whereas the restricted innate immune response in early-SARS-CoV-2-infected lung tissues could underlie the unique uncontrolled late-phase lung damage of advanced COVID-19. IMPORTANCE In order to reduce the late-phase morbidity and mortality of COVID-19, there is a need to better understand and target the earliest stages of SARS-CoV-2 infection in the human respiratory tract. Here, we have studied the initial steps of SARS-CoV-2 infection and the consequent innate immune responses within the natural multicellular complexity of human nasal mucosal and lung tissues. Comparing the global innate response patterns of nasal and lung tissues infected in parallel with SARS-CoV-2 and influenza virus, we found distinct virus-host interactions in the upper and lower respiratory tract, which could determine the outcome and unique pathogenesis of SARS-CoV-2 infection. Studies in the nasal mucosal infection model can be employed to assess the impact of viral evolutionary changes and evaluate new therapeutic and preventive measures against SARS-CoV-2 and other human respiratory pathogens.

Is intraoperative margin sampling necessary in inverted papilloma resection?

PURPOSE: To explore the association between intraoperative surgical margin sampling by the frozen sections and recurrence in inverted papilloma surgery. METHODS: A multicenter, retrospective study of patients who underwent attachment-oriented IP resection in four tertiary care medical centers with a minimal follow-up of 36 months. RESULTS: The study included 220 surgeries with a mean follow-up period of 49 months (range 36-204). The endoscopic approach was used in all but 4 cases; 73% of procedures were primary. Overall recurrence was 10.45% (n = 23). Squamous cell carcinoma was found in 5 cases (2.2%). Intraoperative margin sampling was obtained in 145 cases. There was no difference in the recurrence rate between frozen section and no-frozen section groups (p = 0.44). Furthermore, margin sampling in various sites of tumor origin, in cases with concomitant nasal polyps (p = 0.53) and in revision cases (p = 0.08) showed no correlation with recurrence. In 26 cases when the surgery was extended following a positive frozen section, there was a significantly higher recurrence rate (OR = 6.94). CONCLUSIONS: According to our results, intraoperative margin sampling did not affect the recurrence rate of IP, and therefore, its routine use should be questioned.

Human Nasal Turbinate Tissues in Organ Culture as a Model for Human Cytomegalovirus Infection at the Mucosal Entry Site.

The initial events of viral infection at the primary mucosal entry site following horizontal person-to-person transmission have remained ill defined. Our limited understanding is further underscored by the absence of animal models in the case of human-restricted viruses, such as human cytomegalovirus (HCMV), a leading cause of congenital infection and a major pathogen in immunocompromised individuals. Here, we established a novel ex vivo model of HCMV infection in native human nasal turbinate tissues. Nasal turbinate tissue viability and physiological functionality were preserved for at least 7 days in culture. We found that nasal mucosal tissues were susceptible to HCMV infection, with predominant infection of ciliated respiratory epithelial cells. A limited viral spread was demonstrated, involving mainly stromal and vascular endothelial cells within the tissue. Importantly, functional antiviral and proleukocyte chemotactic signaling pathways were significantly upregulated in the nasal mucosa in response to infection. Conversely, HCMV downregulated the expression of nasal epithelial cell-related genes. We further revealed tissue-specific innate immune response patterns to HCMV, comparing infected human nasal mucosal and placental tissues, representing the viral entry and the maternal-to-fetal transmission sites, respectively. Taken together, our studies provide insights into the earliest stages of HCMV infection. Studies in this model could help evaluate new interventions against the horizontal transmission of HCMV.IMPORTANCE HCMV is a ubiquitous human pathogen causing neurodevelopmental disabilities in congenitally infected children and severe disease in immunocompromised patients. The earliest stages of HCMV infection in the human host have remained elusive in the absence of a model for the viral entry site. Here, we describe the establishment and use of a novel nasal turbinate organ culture to study the initial steps of viral infection and the consequent innate immune responses within the natural complexity and the full cellular repertoire of human nasal mucosal tissues. This model can be applied to examine new antiviral interventions against the horizontal transmission of HCMV and potentially that of other viruses.

How face masks influence the sinonasal quality of life during the COVID-19 pandemic.

PURPOSE: To study different mask types' impact on a sinonasal quality of life. METHODS: For this observational cross-sectional study, a web-based survey was distributed via social media forums. We used the validated Hebrew version of the Sinonasal Outcome Test-22 followed by a questionnaire developed specifically for the present study, focusing on the time of the COVID-19 pandemic (Mask Sinonasal Outcome Test), and questions regarding general health issues. The participants' mask-wearing routine was also studied. RESULTS: Seventy percent of 351 participants had experienced a change in their breathing during the time of the pandemic. The median total Sinonasal Outcome Test-22 score was 13, and 10% of the participants reported a significantly impaired quality of life. According to multivariate analyses, the only subject-related variables significantly associated with the reduced sinonasal quality of life were female gender, younger age, a background of chronic rhinitis and sinusitis, and the mask-wearing average daily duration. The mask sinonasal outcome test convergent validity was confirmed. CONCLUSION: The majority of our survey's responders, predominantly female and younger participants, reported reduced sinonasal quality of life in the COVID-19 pandemic period. It can be attributed to mask-wearing, especially for a prolonged time, irrespective of the existing mask type. These findings should encourage medical companies to produce more "airway-minded" personal protection equipment.

Microflora of normal maxillary sinuses: does it justify perioperative antibiotic treatment in sinus augmentation procedures.

OBJECTIVES: To investigate bacterial flora of normal maxillary sinuses in order to facilitate perioperative antibiotic management in sinus augmentation procedures. MATERIALS AND METHODS: Specimens of maxillary sinus mucosa were harvested during planned orthognatic surgery in 18 patients with no evidence of rhinosinusitis. The samples were processed according to hospital routine for aerobic and anaerobic cultures. RESULTS: Ten maxillary sinuses were found sterile. Twenty-six (72%) maxillary mucosa specimens were culture-positive. Aerobes were recovered in 21 sinus samples (58%), predominantly as polymicrobial flora (18 cultures, 50% of all specimens), S. aureus in 2 sinuses of the same patient (6% of the samples), and Bacillus sp. in 1 sinus (3%). Anaerobes were isolated in 20 of 26 culture-positive specimens (56% of all sinus samples). They were recovered alone in 5 samples. Fifteen anaerobic cultures were polymicrobial (42% of all samples). Propionibacterium acnes was isolated from another 5 sinuses (14%) of 3 patients. CONCLUSIONS: Our data support the policy of perioperative antibiotic prophylaxis in sinus augmentation procedures where Schneiderian membrane is perforated. CLINICAL RELEVANCE: Evaluating the need of a perioperative antibiotic therapy in sinus augmentation procedures.

Correlation Between the Sleep-Position Habits and the Affected Posterior Semicircular Canal in Patients with Benign Paroxysmal Positional Vertigo.

BACKGROUND: Benign paroxysmal positional vertigo (BPPV) is the most common cause of vertigo. It is assumed that sleep is involved in the pathogenesis of BPPV, and that habitual head-lying side during sleep correlates with the affected side in the posterior semicircular canal BPPV. OBJECTIVES: To investigate the relationship between the preferred sleeping position and the affected semicircular canal in patients with BPPV. METHODS: We performed a retrospective data review of patients seeking help for vertigo/dizziness who had undergone clinical evaluation including a Dix-Hallpike test. Patients diagnosed with posterior canal BPPV (p-BPPV) were asked to define their preferred lying side (right, left, supine, or variable) during the night sleep. Affected semicircular canal (right posterior or left posterior) was registered along with demographic data. RESULTS: In all, 237 patients were diagnosed with p-BPPV. Patients with horizontal semicircular canal BPPV (n=11) were excluded. Patient mean age was 57 years (range 14-87). There were 150 patients with right p-BPPV and 87 patients with left p-BPPV. Among the patients, 122 (52%) habitually slept on the right side. Of those, 102 (84%) were diagnosed with right p-BPPV (P = 0.0006), while 82 patients (34%) habitually slept on the left side. Fifty-three (65%) were diagnosed with left p-BPPV (P < 0.0001). There were no differences in right vs. left p-BPPV in the 33 patients (14%) who expressed no preference concerning their sleeping positions. CONCLUSIONS: Our study highlights the etiology of BPPV and showed that changing sleep position habits might be helpful in preventing recurrent BPPV.

Awake Tracheostomy: Indications, Complications and Outcome.

BACKGROUND: Awake tracheostomy (AT) is aimed at securing the airway of patients with upper airway obstruction when other means are not feasible or have failed. Reports on AT in the literature are scarce. The goal of this study was to review our experience with the indications, complications and outcome of AT. METHODS: A retrospective chart review was conducted on all ATs performed between 2010 and 2016 in two university-affiliated, tertiary medical centers. Data on demographics, indications, techniques, urgency and postoperative complications were retrieved from the medical charts. RESULTS: The 37 of the 1023 recorded tracheostomies (3.62%) that were ATs comprised the study group (mean age of the patients 60.3 years, 32 [86.5%] males). The most common indication was head and neck (HN) malignancy (oncologic group, 70.3%), with the larynx (53.8%) being the most commonly involved site. Patients in the non-oncologic group (n = 11) were significantly younger (P = 0.048) and had a significantly higher prevalence of urgent surgery compared to the oncologic group (P = 0.0009). Major postoperative complications included tube dislodgement (n = 2) and pneumothorax (n = 1) that were managed successfully. One of the two patients with severe hypoxia and arrhythmia that necessitated cardiopulmonary resuscitation died. CONCLUSION: Whether the etiology of the AT was related to HN oncological disease or not was the most important clinical factor in our cohort. The non-oncologic group was significantly younger, suffered from more urgent events and tended to have more complications (nonsignificant). ATs had a 97.3% rate of immediate survival, a 5.4% risk of major irreversible complications and a 2.7% risk of mortality.

Warthin tumor within the superficial lobe of the parotid gland: a suggested criterion for diagnosis.

The location of Warthin tumor (WT) in the parotid gland impacts the surgical approach and may be indicative of the elusive origin of this intriguing entity. Location in the deep versus superficial lobe of the gland is not directly addressed when defining WT characteristics. Our observation, of rare occurrence of deep lobe WT, if at all, led to the current investigation. The study design is cohort study. This is a retrospective chart review of all patients undergoing parotidectomy for WT in two tertiary academic referral centers: the Sheba Medical Center (SMC), Israel, and the Christiana Care (CC), Newark, Delaware, USA. 122 consecutive adult patients underwent parotidectomy for WT (72 from SMC and 50 from CC). Seventy percent were males, with a mean age of 60.6 years. Bilateral WT or multi-centric WT were found in 9.8 and 17.2% of the cases, respectively. In one case, the tumor was described as originating in the deep lobe. In all other cases, the tumor originated and was limited to the superficial lobe. 99.2% of WT originated in the superficial lobe, corresponding with the few reports directly addressing its location in the gland. The reason for the tumor to be limited almost uniformly to the superficial lobe is unknown, and could be related to the etiopathogenesis of this elusive entity. We suggest adding tumor location within the superficial lobe to the common characteristics of WT (male, smoking, and lower pole) that serve as "common criterion" while evaluating a parotid lesion.

The utility of minimally invasive transcanal endoscopic approach for removal of residual/recurrent cholesteatoma: preliminary results.

To investigate the feasibility of applying the transcanal endoscopic approach (TEA) for surgical treatment of residual/recurrent cholesteatoma and present the preliminary results of 17 revision procedures that were carried out with this minimally invasive approach. The records of 17 patients (aged 5-76 years) who underwent transcanal revision procedure using rigid 3-mm diameter, 0°, 30° and 45° endoscopes between 2009 and 2012 were retrospectively reviewed. A wide posterior tympanomeatal flap was elevated via the external auditory canal and then transposed inferiorly in cases of cholesteatoma situated in the middle ear under a tympanic membrane. In certain cases, cholesteatoma was assessed and removed using the endoscopes directly from the radical cavity or from the mastoid cavity remaining after a canal-wall-down procedure. Six patients had originally undergone the canal-wall-up mastoidectomy, 6 patients had a canal-wall-down mastoidectomy and 5 patients had radical mastoid cavities. The interval between the previous and the index surgery ranged between 1 and 6 years. The attic was the most common site involved with cholesteatoma, followed by the tympanic portion of the facial nerve, sinus tympani, mastoid, supratubal recess, promontory, round and oval windows. The size of residual/recurrent lesion varied between 3 and 15 mm. The patients were followed up 26-67 months (mean 52.1 months). The single recurrence (a 4-mm pearl over the tympanic portion of the facial nerve) was eradicated by a transcanal re-revision 1 year following the index surgery. Minimally invasive TEA can be successfully applied in carefully selected patients with endoscopically accessible cholesteatoma subsequent to various types of mastoidectomy.

Acute Invasive Fungal Rhinosinusitis in Children With Hematologic Malignancies: Outcome of Surgical Treatment.

The incidence of acute invasive fungal rhinosinusitis (AIFR) is rising due to more aggressive chemotherapy and longer survival of immunosuppressed patients. Early diagnosis and appropriate but nonmutilating surgical treatment are particularly problematic in the pediatric population. This study aimed to evaluate the outcome of surgery for pediatric AIFR. Medical records of children surgically treated for AIFR between 1998 and 2014 were reviewed. Diagnosis was based on both histopathological and microbiological confirmation. Surgery was performed with curative intent and repeated for any resectable extension. The children underwent endoscopy and magnetic resonance imaging every 2 and 6 months, respectively, during the first postoperative year. Thirteen patients (2-18 years old) met the EORTC/MSG criteria for proven invasive fungal sinusitis; fungal invasion was diagnosed by preoperative biopsy and confirmed in the surgical specimen. All patients underwent an average of two endoscopic procedures (range 1-3), and four of them also underwent an open surgery. The local control rate was at least 79%. There was no facial disfiguration during follow-up (average 41 months). Although AIFR is still associated with high mortality, aggressive medical and surgical treatment provides local control in most cases. Fair outcome should encourage a maximal joint effort of pediatric hemato-oncologists and otorhinolaryngologists in the management of AIFR.

Efficacy of myringoplasty in older people.

The aim of current investigation was to analyze the efficacy of myringoplasty in an elderly population. The medical records of 12 males and 9 females, aged 65-90 years (mean 70.7 years), who underwent myringoplasty between 2007 and 2013 were retrospectively reviewed for age, gender, co-morbidities, perforation size and location, pre- and postoperative pure tone averages of air/bone thresholds at 500, 1,000, 2,000 and 3,000 Hz, graft material, postoperative complications and surgical outcome. The most frequent co-morbidities included hypertension (n = 8), hyperlipidemia (n = 7), diabetes mellitus (n = 5) and ischemic heart disease (n = 4). Fifteen patients had two or more co-morbidities. All surgeries were performed via a trans-canal approach. Seventeen patients had central perforations and four patients had marginal perforations. Temporalis fascia, perichondrium or chondro-perichondrial graft and fat were used as grafting material in 9, 11 and 1 patient, respectively. The post-operative complications were infection (n = 4) and tragal seroma (n = 1). Surgical outcome was successful in 16/21 patients with graft take rates of 89, 72 and 0% for temporalis fascia, perichondrium/cartilage, and fat, respectively. Pre-operative audiometric data were available for all 21 patients; however, the post-operative data were available for only 15 of them. Myringoplasty in older people was a safe procedure with a 76.2% surgical success rate in the current study. The choice of graft material, perforation size, gender and associated co-morbidities had no significant effect on achieving an intact tympanic membrane and a dry ear. The audiometric results did not show significant changes following myringoplasty.

Pre-Operative Planning of a DCR Surgery Using Virtual Reality.

PURPOSE: To assess a novel Virtual Reality (VR) tool designed to enhance understanding of the nasal anatomy in patients eligible for DCR surgery. METHODS: Preoperative Computed Tomography (CT) scans of the orbit were obtained and loaded as DICOM (Digital Imaging and Communications in Medicine) files onto the D2P software (3D Systems Inc. Littleton, CO) for tissue segmentation and 3D model preparation. Segmentation was performed on several anatomical structures, including the skull, lacrimal sac, nasal septum, inferior and middle turbinate. The resulting 3D model was visualized using a VR headset. After completing the segmentation procedure, ten cases were evaluated by a panel of six surgeons, including both senior and resident physicians from ENT and oculoplastic specialties. RESULTS: The dataset under examination comprised images from 10 preoperative CT scans of the orbits of patients eligible for Endo-DCR. When evaluating the CT using the VR tool, in 73.3% of the cases ENT surgeons were right about the side of pathology, while only 43.3% ophthalmologists were right (chi-square, p = .018). In 72.8% of the cases ENT surgeons were evaluated right that there is a septum deviation, while only in 47.2% of the cases the ophthalmologists were right (chi-square, p = .094).When evaluating the CT using the VR tool, in 60% of the cases consultants were right about the pathology, while 57.7% of the residents were right (chi-square, p = .853). In 81.7% of the cases consultants were evaluated right that there is a septum deviation, while only in 58.3% of the cases the ophthalmologists were right (chi-square, p = .198). DISCUSSION: ENT surgeons, as well as consultants, interpreted the CT better than the ophthalmologists and residents. Surprisingly, the VR system did not help them to interpret the CT better. Further, more extensive studies should be done to build a VR system that assists in the correct interpretation of the preoperative CT before DCR surgery as well as during DCR surgery.

Use of the vessel sealing system in tracheostomy.

BACKGROUND: Tracheostomy is a frequent, and at times semiurgent, surgical procedure. It is performed in close proximity to the thyroid gland, and in many cases requires division of its isthmus, putting a patient in danger of significant bleeding. OBJECTIVES: To examine prospectively the feasibility of vessel sealing in tracheostomy. METHODS: A vessel-seating device was used in 24 consecutive patients undergoing tracheostomy. There were no exclusion criteria for enrolling the patients. No other hemostatic technique was used for dividing the isthmus. RESULTS: There were no bleeding events throughout the postoperative period. The operating time saving was 5-10 minutes. CONCLUSIONS: Use of the vessel sealer was found to be straightforward, efficacious, rapid and safe.

Applicability of Transnasal Echography for Identification of Internal Carotid Artery.

OBJECTIVE: To study the applicability of transnasal echography for the internal carotid artery (ICA) imaging during endoscopic procedures, primarily nasopharyngectomy. STUDY DESIGN: Non-randomized controlled cohort. METHODS: The tip of a pediatric transducer for transesophageal echography was inserted into each nostril under endoscopic control and placed in the ipsilateral Rosenmuller's fossa. The ICA's internal diameter and distance between the nasopharyngeal wall and the artery's closest point were measured on each side. Two independent examiners measured the same parameters on the axial plane of the skull base computer tomography (CT). Agreement between CT and echography measurements was estimated by the Bland-Altman approach. RESULTS: Twenty-seven ICAs (sides) were available for the echography-CT agreement analysis. Inter method agreement for both parameters was similar to the inter examiner agreement for the CT measurements. CONCLUSIONS: Our first study on endoscopic echography demonstrated that this method is applicable, potentially allowing safer transnasal surgery in the ICA vicinity. LEVEL OF EVIDENCE: 3 Laryngoscope, 132:1184-1188, 2022.

SARS-CoV-2 Omicron Induces Enhanced Mucosal Interferon Response Compared to other Variants of Concern, Associated with Restricted Replication in Human Lung Tissues.

SARS-CoV-2 Omicron variant has been characterized by decreased clinical severity, raising the question of whether early variant-specific interactions within the mucosal surfaces of the respiratory tract could mediate its attenuated pathogenicity. Here, we employed ex vivo infection of native human nasal and lung tissues to investigate the local-mucosal susceptibility and innate immune response to Omicron compared to Delta and earlier SARS-CoV-2 variants of concern (VOC). We show that the replication of Omicron in lung tissues is highly restricted compared to other VOC, whereas it remains relatively unchanged in nasal tissues. Mechanistically, Omicron induced a much stronger antiviral interferon response in infected tissues compared to Delta and earlier VOC-a difference, which was most striking in the lung tissues, where the innate immune response to all other SARS-CoV-2 VOC was blunted. Notably, blocking the innate immune signaling restored Omicron replication in the lung tissues. Our data provide new insights to the reduced lung involvement and clinical severity of Omicron.

Can Computed Tomography Findings Predict the Recurrence of Sinonasal Inverted Papilloma?

OBJECTIVE: To evaluate the correlation between the ability to predict the attachment site of sinonasal inverted papilloma by computed tomography and the long-term surgical outcome. STUDY DESIGN: Retrospective cohort study. SETTING: Five tertiary medical centers. METHODS: Study patients underwent attachment-oriented resection of inverted papilloma. The primary outcome was tumor recurrence. RESULTS: Among 195 patients eligible for the study, focal hyperostosis was recognized on computed tomography in 65% (n = 127), in 71% of primary cases (n = 101), and in 50% of revision procedures (n = 26). There was a trend for a higher incidence of squamous cell carcinoma among the patients without detectable hyperostosis (P = .051). Location of hyperostosis coincided with the actual tumor attachment site in 114 patients (90%). Discordance between these parameters did not differ significantly (P = .463) between 11 primary and 2 revision cases. The overall rate of recurrence was 9.7% (n = 19), with a mean time to recurrence of 20 months (range, 7-96 months). The rate of recurrence did not correlate with any of the following: tumor stage, surgical approach, presence of squamous cell carcinoma, whether the surgery was primary or revision, and the presence or location of focal hyperostosis on computed tomography. Inverted papilloma recurred significantly more often (38.5%) when the intraoperative findings of the tumor attachment site did not match the location of hyperostosis observed on computed tomography (odds ratio, 6.5; 95% CI, 1.78-23.66). CONCLUSION: Detectability of focal hyperostosis on preoperative computed tomography does not affect the long-term outcome of inverted papilloma resection.

No impact of nasal septoplasty on the outcome of endoscopic dacryocystorhinostomy.

OBJECTIVE: To compare the outcomes of combined endoscopic dacryocystorhinostomy (endoDCR) with nasal septoplasty for deviation of the nasal septum to endoDCR alone in cases of nasolacrimal duct obstruction (NLDO). METHODS: A retrospective cohort study that included 107 consecutive patients with NLDO, who underwent endoDCR with or without concomitant nasal septoplasty in our institution between October 2009 and October 2017. RESULTS: A total of 117 operations were performed (107 patients, 80.4% females; mean age ± SD 51.1 ± 19.5 years). Twenty-five (21.4%) endoscopic surgeries were combined with septoplasty (the endoDCR + septoplasty group), and 92 (78.6%) comprised endoDCR alone (the endoDCR group). There was no difference in anatomical success and functional success rates between the two groups (P = 0.76 and P = 0.18, respectively). There were no complications attributed to the septoplasty component of the surgical procedure. CONCLUSION: Considerable numbers of patients undergoing endoDCR also require a septoplasty. Combining an additional procedure (septoplasty), that was not performed for its original indication but rather for facilitating the main surgical intervention (endoDCR), yields surgical success and associated complications equivalent to those of endoDCR alone.