Publications by authors named "Kalmann R"

The following case potentially provides insight into the mechanisms of lymphogenic metastasis in sinonasal cancer. A 63-year-old patient who presented with progressive diplopia and left-sided periocular pain was diagnosed with a cT4bN0M0 mucosal melanoma of the ethmoid sinus. She underwent a combined endonasal and transcranial tumor resection, and an orbital exenteration.

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Article Synopsis
  • The conjunctival epithelium has two key cell types: goblet cells that produce mucus and keratinocytes that secrete water, with keratinocytes presenting mucins on their surface.
  • Research involves long-term organoid cultures of human and mouse conjunctiva, revealing essential gene expression and identification of conjunctival stem cells.
  • The study also explores viral infections (HSV1, hAdV8, SARS-CoV-2) in conjunctival cultures, demonstrating treatment options for some infections and documenting gene expression changes induced by these viruses, highlighting the potential for organoid transplantation to study conjunctival health and disease.
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The aim of this paper was to report the case of a patient with orbital inflammation and dacryoadenitis after COVID-19 vaccination. During the COVID-19 pandemic, we noticed an increase of post-viral syndromes, both linked to infection and to vaccination. A 53-year-old male presented with proptosis, chemosis, hypotropia, and ophthalmoplegia of the right eye, 1 day after his COVID-19 booster shot.

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Purpose: Graves' orbitopathy (GO) is a rare condition in children often considered to be a less severe condition than at an older age. The aim of our study was to analyse if there are any factors that distinguish paediatric from adult GO in order to provide guidelines for assessing and managing paediatric GO.

Methods: Study design is a multicentre retrospective observational case series; 115 paediatric patients diagnosed with GO who visited our university medical centres in the Netherlands and Iran between 2003 and 2019 were submitted for complete ophthalmological examinations, serological testing and/or orbital imaging.

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A 50-year-old woman presented at the outpatient clinic of the department of oral and maxillofacial surgery with a severe swelling around the left eye 1 week after removal of the second molar in the upper jaw. Despite administration of antibiotics 2 days after the removal of the molar because of periorbital swelling, the inflammation spread to the intraorbital space with eventual loss of the left eye. Timely recognition of the symptoms of (the onset of) an orbital infection after dental treatment and immediate referral to an oral and maxillofacial surgeon and/or ophthalmologist for adequate treatment can be vision-saving.

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Article Synopsis
  • The lacrimal gland is crucial for keeping the eye lubricated and protected; problems in its fluid production can lead to dry eye syndrome, causing discomfort and eye damage.
  • This research establishes long-term 3D organoid cultures for both mouse and human lacrimal glands, which mimic key features of their natural structure and function.
  • The study identifies Pax6 as a critical gene for developing lacrimal gland cells and offers a detailed cell map of human lacrimal tissue, demonstrating that these organoids can replicate tear secretion and even successfully engraft in mouse models.
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Non-Hodgkin orbital lymphoma (NHOL) and idiopathic orbital inflammation (IOI) are common orbital conditions with largely unknown pathophysiology. To investigate the immune cell composition of these diseases, we performed standardized 29 parameter flow cytometry phenotyping in peripheral blood mononuclear cells of 18 NHOL patients, 21 IOI patients, and 41 unaffected controls. Automatic gating by FlowSOM revealed decreased abundance of meta-clusters containing dendritic cells in patients, which we confirmed by manual gating.

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Non-Hodgkin orbital lymphoma (NHOL) and idiopathic orbital inflammation (IOI) are common orbital conditions with largely unknown pathophysiology that can be difficult to diagnose. In this study we aim to identify serum miRNAs associated with NHOL and IOI. We performed OpenArray miRNA profiling in 33 patients and controls.

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Background: Orbital inflammatory diseases are a heterogenic group of conditions that often entail a difficult diagnostic process and many patients are treatment resistant. Inflammatory diseases can be visualized by Zirconium-89-labelled rituximab PET-CT (Zr-rituximab PET/CT). In this study, we describe our experience and possible potential of the Zr-rituximab PET/CT for diagnostic and therapeutic management of refractory orbital inflammation.

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Purpose: To systematically analyze existing classification systems for idiopathic orbital inflammation (IOI) and propose and test a new best practice classification system.

Methods: A systematic literature search was conducted to find all studies that described and applied a classification system for IOI. Classification categories used in more than two studies were extracted, and criteria for these categories were defined using common descriptors.

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Purpose: To provide a framework when to biopsy patients suspected of idiopathic orbital inflammation (IOI).

Materials And Methods: One-hundred seventeen patients were selected with signs of orbital inflammation in whom after history and physical examination, no definite diagnosis was made. In this cohort, the role of biopsy in making a diagnosis was evaluated and compared to a therapeutic trial of corticosteroids.

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Objectives: Orbital manifestation of Wegener's granulomatosis is diverse and diagnosis is often difficult. This study aims to improve the diagnostic strategy in orbital Wegener.

Methods: A review of the diagnostic process in patients in whom a diagnosis of orbital WG was considered.

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Background: Prednisone pulse therapy is used to treat active non-infectious orbital inflammatory disease to attain faster clinical improvement and to shorten the duration of prednisone treatment. This study addresses the use of intravenous methylprednisolone (IVMP) pulse therapy, in addition to oral prednisone (OP), in the treatment of severe idiopathic orbital inflammation (IOI).

Methods: This was a multicentre retrospective cohort study.

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Objective: To identify risk factors involved in the development of idiopathic orbital inflammation (IOI).

Methods: Case-control study of 69 adults who had had a first episode of IOI and 296 adult controls with rhegmatogenous retinal detachment (RD) selected from three orbital centres in The Netherlands between 2000 and 2006. Participants filled out a questionnaire on demographic factors, medical history, health status and exposures for the 2 years prior to disease presentation.

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Purpose: To identify the predictive factors for overcorrection and depression impairment after recession of the inferior rectus muscle (IRM) in patients with Graves' orbitopathy.

Design: Retrospective cohort study, single institution.

Methods: The charts of 124 consecutive patients who underwent recession of the IRM were retrospectively examined, as well as all literature with regard to the subject until January 2008.

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Aim: To compare the outcome of various surgical approaches of orbital decompression in patients with Graves' orbitopathy (GO) receiving surgery for disfiguring proptosis.

Method: Data forms and questionnaires from consecutive, euthyroid patients with inactive GO who had undergone orbital decompression for disfiguring proptosis in 11 European centres were analysed.

Results: Eighteen different (combinations of) approaches were used, the swinging eyelid approach being the most popular followed by the coronal and transconjunctival approaches.

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Objective: To assess whether methylprednisolone (MP) pulse therapy is efficacious in the treatment of moderately severe Graves' orbitopathy (GO).

Design: Prospective, placebo (PL)-controlled, double-blind, randomized study.

Methods: Fifteen previously untreated patients with active, moderately severe GO participated in the study; 6 patients received MP and 9 patients a PL.

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Purpose: To compare 2 different approaches for 3-wall orbital decompression in patients with disfiguring proptosis due to Graves' orbitopathy, and to determine which technique is preferable.

Design: Retrospective nonrandomized study with a concurrent comparison group.

Participants: Charts of 74 consecutive patients with disfiguring proptosis due to Graves' orbitopathy who underwent coronal (46) or swinging eyelid (28) decompression between January 1, 2000 and January 1, 2004 were studied retrospectively.

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