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  1. Book: Eye pathology

    Heegaard, Steffen / Grossniklaus, Hans E.

    an illustrated guide

    2015  

    Author's details Steffen Heegaard ; Hans Grossniklaus ed
    Keywords Augenkrankheit
    Subject Ophthalmopathia ; Ophthalmopathie ; Augenerkrankung
    Language English
    Size VIII, 739 S. : zahlr. Ill.
    Publisher Springer
    Publishing place Heidelberg u.a.
    Publishing country Germany
    Document type Book
    HBZ-ID HT018511425
    ISBN 978-3-662-43381-2 ; 978-3-662-51182-4 ; 3-662-43381-8 ; 9783662433829 ; 3-662-51182-7 ; 3662433826
    Database Catalogue ZB MED Medicine, Health

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  2. Book: Morphology of the vitreoretinal border region

    Heegaard, Steffen

    (Acta ophthalmologica Scandinavica : Supplement ; 222)

    1997  

    Title variant København, Univ., Diss., 1997
    Author's details Steffen Heegaard
    Series title Acta ophthalmologica Scandinavica : Supplement ; 222
    Acta ophthalmologica Scandinavica
    Acta ophthalmologica Scandinavica ; Supplement
    Collection Acta ophthalmologica Scandinavica
    Acta ophthalmologica Scandinavica ; Supplement
    Keywords Retina / anatomy & histology ; Vitreous Body / anatomy & histology ; Netzhaut ; Morphologie ; Glaskörper
    Subject Tiermorphologie ; Morphologie ; Corpus vitreum ; Retina
    Language English
    Size 31 S. : Ill., graph. Darst.
    Publisher Scriptor
    Publishing place Copenhagen
    Publishing country Denmark
    Document type Book
    HBZ-ID HT007676089
    ISBN 87-7264-055-3 ; 978-87-7264-055-6
    Database Catalogue ZB MED Medicine, Health

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  3. Article: Aquaporins in Eye.

    Tran, Thuy Linh / Hamann, Steffen / Heegaard, Steffen

    Advances in experimental medicine and biology

    2023  Volume 1398, Page(s) 203–209

    Abstract: The major part of the eye consists of water. Continuous movement of water and ions between the ocular compartments and to the systemic circulation is pivotal for many physiological functions in the eye. The movement of water facilitates removal of the ... ...

    Abstract The major part of the eye consists of water. Continuous movement of water and ions between the ocular compartments and to the systemic circulation is pivotal for many physiological functions in the eye. The movement of water facilitates removal of the many metabolic products of corneal-, ciliary body-, lens-, and retinal metabolism, while maintaining transparency in the optical compartments. Transport across the corneal epithelium and endothelium maintains the corneal transparency. Also, aqueous humor is continuously secreted by the epithelia of the ciliary body and maintains the intraocular pressure. In the retina, water is transported into the vitreous body and across the retinal pigment epithelium to regulate the extracellular environment and the hydration of the retina. Aquaporins are a major contributor in the water transport throughout the eye.
    MeSH term(s) Eye/metabolism ; Aquaporins/metabolism ; Retina/metabolism ; Cornea ; Lens, Crystalline/metabolism ; Water/metabolism
    Chemical Substances Aquaporins ; Water (059QF0KO0R)
    Language English
    Publishing date 2023-01-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 410187-X
    ISSN 0065-2598
    ISSN 0065-2598
    DOI 10.1007/978-981-19-7415-1_14
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Surgical Procedures in the Treatment of Dry Eye Disease.

    Møller-Hansen, Michael / Utheim, Tor Paaske / Heegaard, Steffen

    Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics

    2023  Volume 39, Issue 10, Page(s) 692–698

    Abstract: Dry eye disease (DED) is a multifactorial disease affecting 5% to 50% in different populations. The most severe cases of DED are often caused by aqueous deficient dry eye disease (ADDE) due to lacrimal gland (LG) hypofunction. Many patients with severe ... ...

    Abstract Dry eye disease (DED) is a multifactorial disease affecting 5% to 50% in different populations. The most severe cases of DED are often caused by aqueous deficient dry eye disease (ADDE) due to lacrimal gland (LG) hypofunction. Many patients with severe ADDE do not experience adequate symptom relief from topical treatment, severely reducing their quality of life. The focus of this review is to describe the surgical interventions presently being used or investigated when topical treatment with eye drops is insufficient. The conventional surgical approach is to proceed to punctal occlusion or partial or total tarsorrhaphy. However, novel surgical procedures have been reported to have higher efficacy and patient satisfaction than conventional treatments. These procedures include amniotic membrane transplantation, transposition or transplantation of the salivary glands, and cell-based injections into the LG, each with strengths and weaknesses. Further development of these treatment modalities might prove pivotal in treating dry eye patients in the future.
    MeSH term(s) Humans ; Quality of Life ; Dry Eye Syndromes/drug therapy ; Dry Eye Syndromes/surgery ; Dry Eye Syndromes/diagnosis ; Lacrimal Apparatus/surgery ; Tears
    Language English
    Publishing date 2023-08-11
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 1237021-6
    ISSN 1557-7732 ; 1080-7683
    ISSN (online) 1557-7732
    ISSN 1080-7683
    DOI 10.1089/jop.2023.0063
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Human Papillomavirus Related Neoplasia of the Ocular Adnexa.

    Ramberg, Ingvild / Heegaard, Steffen

    Viruses

    2021  Volume 13, Issue 8

    Abstract: Human papillomaviruses (HPV) are a large group of DNA viruses that infect the basal cells of the stratified epithelium at different anatomic locations. In the ocular adnexal region, the mucosa of the conjunctiva and the lacrimal drainage system, as well ... ...

    Abstract Human papillomaviruses (HPV) are a large group of DNA viruses that infect the basal cells of the stratified epithelium at different anatomic locations. In the ocular adnexal region, the mucosa of the conjunctiva and the lacrimal drainage system, as well as the eyelid skin, are potential locations for HPV-related neoplasia. The role of HPV in squamous cell neoplasia of the ocular adnexa has been debated for several decades. Due to the rarity of all these tumors, large studies are not available in the scientific literature, thereby hampering the precision of the HPV prevalence estimates and the ability to conclude. Nevertheless, increasing evidence supports that defined subsets of conjunctival papillomas, intraepithelial neoplasia, and carcinomas develop in an HPV-dependent pathway. The role of HPV in squamous cell tumors arising in the lacrimal drainage system and the eyelid is still uncertain. Further, the potential of HPV status as a diagnostic, prognostic, or predictive biomarker in these diseases is a topic for future research.
    MeSH term(s) Carcinoma in Situ/virology ; Carcinoma, Squamous Cell/virology ; Conjunctiva/cytology ; Conjunctiva/virology ; Humans ; Lacrimal Apparatus/virology ; Papillomaviridae/pathogenicity ; Papillomavirus Infections/complications
    Language English
    Publishing date 2021-08-02
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13081522
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Human Papillomavirus Related Neoplasia of the Ocular Adnexa

    Ramberg, Ingvild / Heegaard, Steffen

    Viruses. 2021 Aug. 02, v. 13, no. 8

    2021  

    Abstract: Human papillomaviruses (HPV) are a large group of DNA viruses that infect the basal cells of the stratified epithelium at different anatomic locations. In the ocular adnexal region, the mucosa of the conjunctiva and the lacrimal drainage system, as well ... ...

    Abstract Human papillomaviruses (HPV) are a large group of DNA viruses that infect the basal cells of the stratified epithelium at different anatomic locations. In the ocular adnexal region, the mucosa of the conjunctiva and the lacrimal drainage system, as well as the eyelid skin, are potential locations for HPV-related neoplasia. The role of HPV in squamous cell neoplasia of the ocular adnexa has been debated for several decades. Due to the rarity of all these tumors, large studies are not available in the scientific literature, thereby hampering the precision of the HPV prevalence estimates and the ability to conclude. Nevertheless, increasing evidence supports that defined subsets of conjunctival papillomas, intraepithelial neoplasia, and carcinomas develop in an HPV-dependent pathway. The role of HPV in squamous cell tumors arising in the lacrimal drainage system and the eyelid is still uncertain. Further, the potential of HPV status as a diagnostic, prognostic, or predictive biomarker in these diseases is a topic for future research.
    Keywords DNA ; Papillomaviridae ; biomarkers ; conjunctiva ; drainage systems ; eyelids ; humans ; mucosa
    Language English
    Dates of publication 2021-0802
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2516098-9
    ISSN 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13081522
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Challenges in diagnosing canine spindle cell tumours using immunohistochemistry, illustrated by three nonpigmented malignant cases from the nictitating membrane.

    Bundgaard Kjellingbro, Kristine / Naranjo Freixa, Carolina / Hjorth Mikkelsen, Lauge / Heegaard, Steffen

    Acta veterinaria Scandinavica

    2024  Volume 66, Issue 1, Page(s) 7

    Abstract: Background: Nonpigmented malignant spindle cell tumours of the membrana nictitans are rare in dogs. In twenty-three years only three cases have been diagnosed in Scandinavia. This study describes the three cases of malignant tumours of the membrana ... ...

    Abstract Background: Nonpigmented malignant spindle cell tumours of the membrana nictitans are rare in dogs. In twenty-three years only three cases have been diagnosed in Scandinavia. This study describes the three cases of malignant tumours of the membrana nictitans recorded by the Eye Pathology Section, University of Copenhagen, Denmark, with reference to the clinical appearance and work-up, the treatment and prognosis, and the histopathological description including immunohistochemistry. The three cases are compared to previous publications on canine tumours of the nictitating membrane. We emphasize the importance of using protocols that are adapted to the specific species such as dogs. Opposite the human tissue responses, we even need more than one marker when diagnosing melanomas in dogs.
    Results: The dogs presented were an 8-year-old Dachshund, a 12-year-old Akita and a 14-year-old Shetland Sheepdog. All three dogs were entire females. All three nictitating membrane tumours developed on the right nictitating membrane as firm or multilobulated hyperaemic masses. Two of the tumours were macroscopically nonpigmented, the third being partly pigmented on the surface and ulcerated. According to the histopathology and for two of the cases immunohistochemistry with dog-adapted protocols the diagnoses included one hemangiosarcoma and two amelanotic melanomas. Tumour regrowth developed in all three cases and repeated resections were completed 1, 2 and 3 times, respectively, with recurrence experienced within 1.5 months - 3 years.
    Conclusions: Nonpigmented malignant spindle cell tumours of the canine membrana nictitans are rare. Treatment of choice should be complete excision with a minimal histologic tumour-free distance and in case of a recurrence a full resection of the nictitating membrane. We strongly recommend a dog-adapted protocol for immunohistochemistry.
    MeSH term(s) Female ; Humans ; Dogs ; Animals ; Nictitating Membrane/pathology ; Nictitating Membrane/surgery ; Immunohistochemistry ; Prognosis ; Dog Diseases/pathology ; Neoplasms/veterinary
    Language English
    Publishing date 2024-02-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 40137-7
    ISSN 1751-0147 ; 0044-605X
    ISSN (online) 1751-0147
    ISSN 0044-605X
    DOI 10.1186/s13028-024-00727-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: A rare case of lacrimal sac angioleiomyoma managed with dacryocystectomy and turbinectomy.

    Næser, Kristian / Pagh, Priyanka / Friis, Per / Heegaard, Steffen

    Orbit (Amsterdam, Netherlands)

    2022  Volume 43, Issue 1, Page(s) 147–150

    Abstract: We report a rare case of a lacrimal sac angioleiomyoma. A 56-year-old woman complained of pain in the right medial canthal region over a period of 2 years. There were no complaints of epiphora or ocular infection, and no visible or palpable masses in the ...

    Abstract We report a rare case of a lacrimal sac angioleiomyoma. A 56-year-old woman complained of pain in the right medial canthal region over a period of 2 years. There were no complaints of epiphora or ocular infection, and no visible or palpable masses in the medial canthal region. Computed tomography scan revealed a solid tumor of the lacrimal sac expanding to the nasolacrimal duct and protruding under the inferior turbinate. The tumor was removed by external dacryocystectomy combined with endonasal, endoscopic anterior turbinectomy, and nasal mucosal resection. Histological and immunohistological findings were consistent with an angioleiomyoma of the venous type. There was no recurrence of the tumor at the three-year follow-up. Angioleiomyomas should be included in the differential diagnosis of lacrimal sac tumors. The definitive diagnoses rely on histology and immunohistological reactions. The treatment is complete surgical resection.
    MeSH term(s) Female ; Humans ; Middle Aged ; Nasolacrimal Duct/surgery ; Angiomyoma/diagnostic imaging ; Angiomyoma/surgery ; Turbinates ; Lacrimal Apparatus/pathology ; Lacrimal Apparatus Diseases/diagnostic imaging ; Lacrimal Apparatus Diseases/surgery ; Dacryocystorhinostomy/methods
    Language English
    Publishing date 2022-06-09
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 603157-2
    ISSN 1744-5108 ; 0167-6830
    ISSN (online) 1744-5108
    ISSN 0167-6830
    DOI 10.1080/01676830.2022.2085306
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Primary mucosal melanomas of the urogenital tract: a clinical, pathological, and genetic nationwide survey of Danish patients 1990-2019.

    Znaider, Victoria K / Mikkelsen, Lauge H / Jensen, Christian Fuglesang S / Sønksen, Jens / Heegaard, Steffen

    Scandinavian journal of urology

    2023  Volume 58, Page(s) 52–59

    Abstract: Purpose: To describe the epidemiologic, clinical, histopathological, and genetic features of primary mucosal melanoma of the urinary tract in a national Danish cohort with cases included from the year 1990 to 2019.: Material and methods: Patients of ... ...

    Abstract Purpose: To describe the epidemiologic, clinical, histopathological, and genetic features of primary mucosal melanoma of the urinary tract in a national Danish cohort with cases included from the year 1990 to 2019.
    Material and methods: Patients of the Danish cohort were found using national databases. Only primary tumours were included in the cohort. Appropriate formalin-fixed paraffin-embedded blocks underwent next-generation sequencing.
    Results: Eight cases of primary urinary bladder melanomas and 18 cases of primary urethral melanomas were included. Bladder melanomas had an incidence of 0.05 cases/million/year. Mean age at diagnosis was 67 years. The most frequent primary treatment was cystectomy. Adjuvant treatment was given in three cases and consisted of chemotherapy or radiotherapy. Mutations were found in the NF1, KRAS, ATRX, TP53, RAC1, and BRAF genes. Urethral melanomas were found to have an incidence of 0.12 cases/million/year. Average age at diagnosis was 77 years. The most frequent treatment was excision of the tumour. Adjuvant treatment was given in nine cases and most frequently consisted of radiotherapy. Mutations were found in the NF1, TERT PROMOTOR, NRAS, ATRX, TP53, ATM, TSC2, and CREBBP genes. The 5-year survival of patients with bladder melanoma was 12.5% and 22.2% for patients with urethral melanoma.
    Conclusion: Our study highlights the rarity of urinary tract melanomas and their poor prognosis. The most widely used treatment for urogenital mucosal melanoma remains surgical while adjuvant therapy strategies are evolving. Next-generation sequencing showed mutational patterns with no location-specific patterns. The most frequent mutations were in the NF1, ATRX, NRAS, and TP53 genes.
    MeSH term(s) Humans ; Aged ; Melanoma/epidemiology ; Melanoma/genetics ; Melanoma/therapy ; Urethral Neoplasms ; Urinary Bladder Neoplasms/epidemiology ; Urinary Bladder Neoplasms/genetics ; Urinary Bladder Neoplasms/therapy ; Cystectomy ; Adjuvants, Immunologic ; Denmark/epidemiology
    Chemical Substances Adjuvants, Immunologic
    Language English
    Publishing date 2023-08-27
    Publishing country Sweden
    Document type Journal Article
    ZDB-ID 2701936-6
    ISSN 2168-1813 ; 2168-1805
    ISSN (online) 2168-1813
    ISSN 2168-1805
    DOI 10.2340/sju.v58.8489
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: The Role of Obstructive Sleep Apnea in Vision-Threatening Diabetic Retinopathy-A National Register-Based Study.

    Ba-Ali, Shakoor / Jennum, Poul Jørgen / Brøndsted, Adam Elias / Heegaard, Steffen / Lund-Andersen, Henrik

    Journal of personalized medicine

    2023  Volume 13, Issue 11

    Abstract: Introduction: we investigated the association between OSA and vision-threatening diabetic retinopathy (VTDR).: Methods: we used three nationwide registers to identify subjects with and without OSA and patients with type 1 (T1DM) or type 2 diabetes ... ...

    Abstract Introduction: we investigated the association between OSA and vision-threatening diabetic retinopathy (VTDR).
    Methods: we used three nationwide registers to identify subjects with and without OSA and patients with type 1 (T1DM) or type 2 diabetes mellitus (T2DM). The Danish Civil Registration System was used to link OSA with diabetes diagnosis. The primary outcome was the occurrence of VTDR in diabetic patients with and without OSA. The secondary outcome was the prevalence of diabetes mellitus in patients with and without OSA.
    Results: we included 532,828 diabetic subjects comprising 13,279 patients with OSA (2.5%) and 519,549 without OSA (97.5%). Diabetic patients with OSA had a 57% lower risk of VTDR compared to diabetic patients without OSA (OR 0.43, 95% CI 0.38-0.50,
    Conclusions: our findings indicate that OSA is associated with a lower risk of VTDR. Since we did not adjust our outcomes for diabetes duration, hypertension control and hemoglobin A1c, future studies are needed to confirm our findings.
    Language English
    Publishing date 2023-10-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662248-8
    ISSN 2075-4426
    ISSN 2075-4426
    DOI 10.3390/jpm13111529
    Database MEDical Literature Analysis and Retrieval System OnLINE

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