Anatomical findings in patients with chronic rhinosinusitis without nasal polyps requiring revision surgery.

Objectives: For the treatment of chronic rhinosinusitis functional endoscopic sinus surgery is a well-established therapy with high initial success rates. However, a significant proportion of patients have persistent disease requiring revision surgery. To date, studies including data of large patient collectives are missing.

Evaluation of an image enhancement system for the assessment of nasal and paranasal sinus diseases.

Purpose: Dysplasia and cancer of the upper aerodigestive tract are characterized by significant neoangiogenesis. This can be recognized by optical methods like the Storz Professional Image Enhancement System (SPIES). Up to now, there are no reports of using this novel technique for examining nasal diseases.

Evaluation of hyperspectral imaging to quantify perfusion changes during the modified Allen test.

Objectives: To evaluate the capability of hyperspectral imaging (HSI), a contact-less and noninvasive technology, to monitor perfusion changes of the hand during a modified Allen test (MAT) and cuff occlusion test. Furthermore, the study aimed at obtaining objective perfusion parameters of the hand.

Methods: HSI of the hand was performed on 20 healthy volunteers with a commercially available HSI system during a MAT and a cuff occlusion test.

How reliable is anamnestic data in predicting the clinical relevance of house dust mite sensitization?

Purpose: For perennial inhalant allergens such as house dust mite (HDM), the German guideline on allergen-specific immunotherapy explicitly recommends provocation testing. This procedure is time-consuming, expensive, and potentially dangerous for the patient. Recently it has been discussed whether provocation tests are really necessary for diagnosing allergy to Dermatophagoides species.

Trends in aeroallergen sensitization in Germany - An analysis of 2919 serological data sets of a university ENT department.

Recently, population-based birth-cohort studies provided an insight into the allergic march during childhood. Our study aimed to investigate sensitization pattern until advanced age. Demographic, clinical and serological characteristics of 2919 patients with positive allergen-specific IgE between 1999 and 2019 were analyzed.

Spontaneous nasal cerebrospinal fluid leaks: management of 24 patients over 11 years.

Purpose: Most cases of non-traumatic nasal cerebrospinal fluid (CSF) leaks occur spontaneously without any obvious reason. Severe and life-threatening complications are possible consequences. Endoscopic repair is considered the gold standard; however, diagnosis and therapy of these CSF leaks stay challenging.

In vivo imaging of the internal nasal valve during different conditions using optical coherence tomography.

Objective: Previously, we proposed long-range optical coherence tomography (LR-OCT) to be an effective method for the quantitative evaluation of the nasal valve geometry. Here, the objective was to quantify the reduction in the internal nasal valve angle and cross-sectional area that results in subjective nasal airway obstruction and to evaluate the dynamic behavior of the valve during respiration using LR-OCT.

Methods: For 16 healthy individuals, LR-OCT was performed in each naris during: 1) normal respiration, 2) peak forced inspiration, 3) lateral nasal wall depression (to the onset of obstructive symptoms), and 4) after application of a topical decongestant.

Evaluation of the combined use of narrow band imaging and high-speed imaging to discriminate laryngeal lesions.

Background And Objective: Laryngeal lesions are usually investigated by microlaryngoscopy, biopsy, and histopathology. This study aimed to evaluate the combined use of Narrow Band Imaging (NBI) and High-Speed Imaging (HSI) in the differentiation of glottic lesions in awake patients.

Study Design: Prospective diagnostic study.

Intraoperative assessment of laryngeal pathologies with optical coherence tomography integrated into a surgical microscope.

Objective: Endoscopic examination followed by tissue biopsy is the gold standard in the evaluation of lesions of the upper aerodigestive tract. However, it can be difficult to distinguish between healthy mucosa, dysplasia, and invasive carcinoma. Optical coherence tomography (OCT) is a non-invasive technique which acquires high-resolution, cross-sectional images of tissue in vivo.

Confocal laser endomicroscopy in head and neck malignancies using FITC-labelled EpCAM- and EGF-R-antibodies in cell lines and tumor biopsies.

Intraoperative detection of residual malignant cells at tumor margins following excision of primary tumors could help improving surgery and thus patients' outcome. The feasibility of the tumor antigens epidermal growth factor receptor (EGF-R) and epithelial cell adhesion molecule (EpCAM) for antibody-dependent confocal laser scanning endomicroscopy (CLE)-mediated visualization of malignant cells was addressed. Both tumor antigens are highly and frequently expressed in the majority of carcinomas, including head and neck squamous cell carcinomas (HNSCC), and represent prognostic and therapeutic tumor target molecules.

Evaluation of confocal laser endomicroscopy as an aid to differentiate primary flat lesions of the larynx: A prospective clinical study.

Background: In this trial, the ability of confocal laser endomicroscopy (CLE), a new imaging modality with a cellular resolution, to further differentiate primary flat lesions of the larynx was evaluated.

Methods: First, an optical coherence tomography was used to filter out normal tissue and carcinoma. All other lesions (30 lesions in 19 patients) were investigated with CLE.

Imaging of the internal nasal valve using long-range Fourier domain optical coherence tomography.

Objectives/hypothesis: To evaluate for the first time the feasibility and methodology of long-range Fourier domain optical coherence tomography (LR-OCT) imaging of the internal nasal valve (INV) area in healthy individuals.

Study Design: Prospective individual cohort study.

Methods: For 16 individuals, OCT was performed in each nare.

Isolated Nasal Tip Metastasis from Esophageal Squamous Cell Carcinoma: Case Report and Literature Review.

Objectives. Cutaneous metastases can be the first sign of a malignant disease and have an unfavorable prognostic significance. The external nose is rarely affected.

Endonasal resection of early stage squamous cell carcinoma of the nasal vestibule.

The squamous cell carcinoma of the nasal vestibule (SCCNV) is a comparatively rare malignant disease. It occurs in the transition zone at the limen nasi. The choice of treatment for small tumors is a matter of controversy.