Tiit Illimar Mathiesen

Tiit Illimar Mathiesen

Clinical Professor

Member of:

  • Neurosurgery


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  1. Published

    Parental age and risk of genetic syndromes predisposing to nervous system tumors: nested case-control study

    Adel Fahmideh, M., Tettamanti, G., Lavebratt, C., Talbäck, M., Mathiesen, Tiit Illimar, Lannering, B., Johnson, K. J. & Feychting, M., 20 Jun 2018, In: Clinical Epidemiology. 10, p. 729-738 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    Cognitive dysfunction and subjective symptoms in patients with arachnoid cyst before and after surgery

    Agopian-Dahlenmark, L., Mathiesen, Tiit Illimar & Bergendal, Å., Jan 2020, In: Acta Neurochirurgica. 162, p. 1041-1050

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Surgeons' experience of venous risk with CPA surgery

    Alaoui-Ismaili, Adam, Krogager, M. E., Jakola, A. S., Poulsgaard, L., Couldwell, W. & Mathiesen, Tiit Illimar, 2021, In: Neurosurgical Review. 44, p. 1675–1685

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Ethics in contemporary health care management and medical education

    Balak, N., Broekman, M. L. D. & Mathiesen, Tiit Illimar, 2020, In: Journal of Evaluation in Clinical Practice. 26, 3, p. 699-706 8 p.

    Research output: Contribution to journal › Review › Research › peer-review

  5. Published

    Hyperbaric Oxygen Therapy as Adjuvant Treatment for Hardware-Related Infections in Neuromodulation

    Bartek, J., Skyrman, S., Nekludov, M., Mathiesen, Tiit Illimar, Lind, F. & Schechtmann, G., 2018, In: Stereotactic and Functional Neurosurgery. 96, 2, p. 100-107

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Pharmacokinetic analysis of [68Ga]Ga-DOTA-TOC PET in meningiomas for assessment of in vivo somatostatin receptor subtype 2

    Bashir, A., Vestergaard, M. B., Binderup, Tina, Broholm, H., Marner, Lisbeth, Ziebell, M., Fugleholm, Kåre, Mathiesen, Tiit Illimar, Kjær, Andreas & Law, Ian, 2020, In: European Journal of Nuclear Medicine and Molecular Imaging. 47, 11, p. 2577-2588

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    CSF hypersecretion versus impaired CSF absorption in posthemorrhagic hydrocephalus: a systematic review

    Ben-Shoshan, Shai David, Lolansen, Sara Diana, Mathiesen, Tiit Illimar & MacAulay, Nanna, 2023, In: Acta Neurochirurgica. 165, p. 3271-3287 17 p.

    Research output: Contribution to journal › Review › Research › peer-review

  8. Published

    Adjuvant radiotherapy and stereotactic radiosurgery in grade 3 meningiomas - a systematic review and meta-analysis

    Bergner, A., Maier, A. D., Mirian, C. & Mathiesen, Tiit Illimar, 2022, In: Neurosurgical Review. 45, p. 2639–2658 20 p.

    Research output: Contribution to journal › Review › Research › peer-review

  9. Published

    Translocator protein (TSPO) expression in neoplastic cells and tumor-associated macrophages in meningiomas

    Blum, Nadja Ayo Denna, Mirian, C., Maier, A. D., Mathiesen, Tiit Illimar, Vilhardt, Frederik & Haslund-Vinding, Jeppe Lohfert, 2023, In: Journal of Neuropathology and Experimental Neurology. 82, 12, p. 1020-1032 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Protein kinase C-inhibition reduces critical weight loss and improves functional outcome after experimental subarachnoid haemorrhage

    Bömers, J. P., Holm, A., Kazantzi, Spyridoula, Edvinsson, L., Mathiesen, Tiit Illimar & Haanes, Kristian Agmund, 2024, In: Journal of Stroke and Cerebrovascular Diseases. 33, 7, 11 p., 107728.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model

    Bömers, J. P., Johansson, S. E., Edvinsson, L., Mathiesen, Tiit Illimar & Haanes, K. A., 2021, In: Journal of visualized experiments : JoVE. 172, 16 p., e62567.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Prompt closure versus gradual weaning of extraventricular drainage for hydrocephalus in adult patients with aneurysmal subarachnoid haemorrhage: A systematic review protocol with meta-analysis and trial sequential analysis

    Capion, T., Lilja-Cyron, Alexander, Juhler, Marianne, Mathiesen, Tiit Illimar & Wetterslev, J., 2019, In: BMJ Open. 9, 10, 8 p., e029719.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Prompt closure versus gradual weaning of external ventricular drainage for hydrocephalus following aneurysmal subarachnoid haemorrhage: Protocol for the DRAIN randomised clinical trial

    Capion, T., Lilja-Cyron, A., Olsen, M. H., Juhler, Marianne, Møller, Kirsten, Sorteberg, A., Rønning, P. A., Poulsen, F. R., Wismann, J., Ravlo, C., Isaksen, J., Lindschou, J., Gluud, C. & Mathiesen, Tiit Illimar, 2023, In: Acta Anaesthesiologica Scandinavica. 67, 8, p. 1121-1127 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Prompt closure versus gradual weaning of external ventricular drainage for hydrocephalus in adult patients with aneurysmal subarachnoid haemorrhage: A systematic review

    Capion, T., Lilja-Cyron, Alexander, Juhler, Marianne, Mathiesen, Tiit Illimar & Wetterslev, J., 2020, In: BMJ Open. 10, 11, 8 p., e040722.

    Research output: Contribution to journal › Review › Research › peer-review

  15. Published

    Quality assessment of evidence must be stated in conclusions to avoid conveying questionable recommendations

    Capion, T., Lilja-Cyron, Alexander, Juhler, Marianne, Mathiesen, Tiit Illimar & Wetterslev, J., Feb 2022, In: Neurosurgical Review. 45, p. 923-924 2 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

  16. Published

    Discontinuation of External Ventricular Drainage in Patients with Hydrocephalus Following Aneurysmal Subarachnoid Hemorrhage - a Scandinavian Multi-institutional Survey

    Capion, T., Lilja-Cyron, Alexander, Bartek, J., Forsse, A., Logallo, N., Juhler, Marianne & Mathiesen, Tiit Illimar, 2020, In: Acta Neurochirurgica. 162, p. 1363-1370

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Negligible In Vitro Recovery of Macromolecules from Microdialysis Using 100 kDa Probes and Dextran in Perfusion Fluid

    Dorothee, S., Sørensen, G., Olsen, L. R., Bastlund, J. F., Sotty, F., Belling, D., Olsen, M. H., Mathiesen, Tiit Illimar, Møller, K., Larsen, F. & Birkeland, P., 2024, In: Neurochemical Research. 49, p. 1322-1330 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Should neurosurgeons continue to work in the absence of personal protective equipment during the COVID-19 era?

    Eijkholt, M., Hulsbergen, A., Muskens, I., Mathiesen, Tiit Illimar, Bolger, C., Feldman, Z., Kitchen, N., Samprón, N., Sandvik, U., Tisell, M. & Broekman, M., 2021, In: Acta Neurochirurgica. p. 593–598

    Research output: Contribution to journal › Review › Research › peer-review

  19. Published

    Three pitfalls of accountable healthcare rationing

    Eijkholt, M., Broekman, M., Balak, N. & Mathiesen, Tiit Illimar, 2021, In: Journal of Medical Ethics. 47, 6 p., e22.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    The delicate topic of progress

    Epstein, D., Kolias, A. & Mathiesen, Tiit Illimar, 2019, In: Acta Neurochirurgica. 161, 8, p. 1489-1490 2 p.

    Research output: Contribution to journal › Editorial › Research

  21. Published

    Multidisciplinary management of clival chordomas: long-term clinical outcome in a single-institution consecutive series

    Förander, P., Bartek, J., Fagerlund, M., Benmaklouf, H., Dodoo, E., Shamikh, A., Stjärne, P. & Mathiesen, Tiit Illimar, Oct 2017, In: Acta Neurochirurgica. 159, 10, p. 1857-1868 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Proposal of a new grading system for meningioma resection: the Copenhagen Protocol

    Haslund-Vinding, Jeppe Lohfert, Skjøth, Jane, Poulsgaard, L., Fugleholm, Kåre, Larsen, Christian Mirian, Maier, A. D., Santarius, T., Poulsen, F. R., Meling, T., Bartek, J. J., Förander, P., Larsen, V. A., Kristensen, Bjarne Winther, Scheie, David, Law, Ian, Ziebell, M. & Mathiesen, Tiit Illimar, 2022, In: Acta Neurochirurgica. 164, p. 229-238

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    The role of systemic inflammatory cells in meningiomas

    Haslund-Vinding, J., Møller, J. R., Ziebell, M., Vilhardt, Frederik & Mathiesen, Tiit Illimar, 2022, In: Neurosurgical Review. 45, p. 1205–1215

    Research output: Contribution to journal › Review › Research › peer-review

  24. Published

    Ethical triage during the COVID-19 pandemic: a toolkit for neurosurgical resource allocation

    Hulsbergen, A. F. C., Eijkholt, M. M., Balak, N., Brennum, J., Bolger, C., Bohrer, A. M., Feldman, Z., Holsgrove, D., Kitchen, N., Mathiesen, Tiit Illimar, Moojen, W. A., Samprón, N., Sames, M., Sandvik, U., Tisell, M. & Broekman, M. L. D., Jul 2020, In: Acta Neurochirurgica. 162, p. 1485-1490

    Research output: Contribution to journal › Review › Research › peer-review

  25. Published

    The prognostic significance of biomarkers in cerebrospinal fluid following severe traumatic brain injury: a systematic review and meta-analysis

    Hvingelby, V. S., Bjarkam, C. R., Mathiesen, Tiit Illimar, Poulsen, F. R., Botker, M. T., Husted, A. & Korshoej, A. R., 2022, In: Neurosurgical Review. 45, p. 2547–2564 18 p.

    Research output: Contribution to journal › Review › Research › peer-review

  26. Published

    COX-2 inhibition by diclofenac is associated with decreased apoptosis and lesion area after experimental focal penetrating traumatic brain injury in rats

    Jadid, K. D., Davidsson, J., Lidin, E., Hanell, A., Angeria, M., Mathiesen, Tiit Illimar, Risling, M. & Gunther, M., 2019, In: Frontiers in Neurology. 10, 8 p., 811.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Somatostatin analogues in treatment-refractory meningioma: a systematic review with meta-analysis of individual patient data

    Jensen, L. R., Maier, A. D., Lomstein, A., Graillon, T., Hrachova, M., Bota, D., Ruiz-Patiño, A., Arrieta, O., Cardona, A. F., Rudà, R., Furtner, J., Roeckle, U., Clement, P., Preusser, M., Scheie, D., Broholm, H., Kristensen, B. W., Skjøth-Rasmussen, J., Ziebell, M., Munch, T. N. & 4 others, Fugleholm, Kåre, Walter, M. A., Mathiesen, Tiit Illimar & Mirian, C., 2022, In: Neurosurgical Review. 45, p. 3067-3081

    Research output: Contribution to journal › Review › Research › peer-review

  28. Published

    Flemming Gjerris 1936-1924

    Juhler, Marianne, Waldemar, Gunhild, Meling, T. & Mathiesen, Tiit Illimar, 2024, In: Acta Neurochirurgica. 166, 1, p. 183 1 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

  29. Published

    Clinical Chiari syndrome or anatomical Chiari malformation? A conundrum revisited

    Kasper, E. M., Mathiesen, Tiit Illimar & Demetriades, A., 2020, In: Acta Neurochirurgica. 162, 7, p. 1527-1528 2 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

  30. Published

    Long-term postoperative health-related quality of life in patients with subfrontal meningiomas

    Kofoed Lauridsen, E., Ciochon, U. M., Tolver, Anders, Knudsen, Mark Bech, Giraldi, L., Springborg, Jacob Bertram, Bøgeskov, L., Poulsgaard, L., Mathiesen, Tiit Illimar, Piil, K. & Fugleholm, Kåre, 2023, In: Journal of Neurosurgery. 138, 6, p. 1542 - 1551

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Three underdogs among galenic veins: anatomical analysis and literature review of surgical relevant veins in the quadrigeminal cistern

    Krogager, M. E., Jespersen, B., Mathiesen, Tiit Illimar & Benndorf, G., 2022, In: Neurosurgical Review. 45, 5, p. 3245-3258

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Intraoperative Videogrammetry and Photogrammetry for Photorealistic Neurosurgical 3-Dimensional Models Generated Using Operative Microscope: Technical Note

    Krogager, M. E., Fugleholm, Kåre, Poulsgaard, L., Springborg, Jacob Bertram, Mathiesen, Tiit Illimar, Cornelius, J. F., Nakov, V., Laleva, L., Milev, M. & Spiriev, T., 2024, In: Operative Neurosurgery. 26, 6, p. 716-726 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Combined cone-beam CT imaging and microsurgical dissection of cadaver specimens to study cerebral venous anatomy: a technical note

    Krogager, M. E., Dahl, R. H., Poulsgaard, L., Fugleholm, Kåre, Sehested, T., Mikkelsen, R., Tranum-Jensen, Jørgen, Mathiesen, Tiit Illimar & Benndorf, G., 2023, In: Surgical and Radiologic Anatomy. 45, p. 1177-1184 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Safe handling of veins in the pineal region—a mixed method study

    Krogager, M. E., Jakola, A. S., Poulsgaard, L., Couldwell, W. & Mathiesen, Tiit Illimar, Feb 2021, In: Neurosurgical Review. 44, 1, p. 317-325 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

    Krogager, M. E., Fugleholm, Kåre, Mathiesen, Tiit Illimar & Spiriev, T., 2023, In: Operative Neurosurgery. 25, 2, p. e71-e77

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Ten-year follow-up after Gamma Knife radiosurgery of meningioma and review of the literature

    Lippitz, B. E., Bartek, J., Mathiesen, Tiit Illimar & Förander, P., 2020, In: Acta Neurochirurgica. 162, 9, p. 2183-2196 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Posthemorrhagic Hydrocephalus in Patients with Subarachnoid Hemorrhage Occurs Independently of CSF Osmolality

    Lolansen, Sara Diana, Rostgaard, Nina, Capion, T., Norager, N. H., Olsen, M. H., Juhler, Marianne, Mathiesen, Tiit Illimar & MacAulay, Nanna, 2023, In: International Journal of Molecular Sciences. 24, 14, 13 p., 11476.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    TARGETED GENE-EXPRESSION ANALYSIS DURING MALIGNANT TRANSFORMATION IN PRIMARY AND SECONDARY MALIGNANT MENINGIOMA

    Maier, A. D., Meddis, Alessandra, Haslund-Vinding, Jeppe Lohfert, Mirian, C., Areskeviciute, A., Nguyen, P., Westergaard, C., Melchior, L. C., Munch, Tina Nørgaard, Skjoth-Rasmussen, J., Poulsgaard, L., Ziebell, M., Bartek, J., Broholm, H., Poulsen, F. R., Gerds, Thomas Alexander, Scheie, David & Mathiesen, Tiit Illimar, 2021, In: Neuro-Oncology. 23, p. 10-11 2 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  39. Published

    Gene expression analysis during progression of malignant meningioma compared to benign meningioma

    Maier, A. D., Meddis, Alessandra, Mirian, C., Haslund-Vinding, Jeppe Lohfert, Bartek, J., Krog, S. M., Nguyen, T. U. P., Areškevičiūtė, A., Melchior, L. C., Heegaard, Steffen, Kristensen, Bjarne Winther, Munch, Tina Nørgaard, Fugleholm, Kåre, Ziebell, M., Raleigh, D. R., Poulsen, F. R., Gerds, Thomas Alexander, Litman, Thomas, Scheie, David & Mathiesen, Tiit Illimar, 2023, In: Journal of Neurosurgery. 138, 5, p. 1-11 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Expression of the stem cell marker CD133 in malignant meningioma

    Maier, A. D., Mirian, C., Jiri Bartek, J. B., Juhler, Marianne, Bartkova, J., Broholm, H. & Mathiesen, Tiit Illimar, 2021, In: Clinical Neuropathology. 40, 5, p. 151-159 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Clinical and histopathological predictors of outcome in malignant meningioma

    Maier, A. D., Bartek, J., Eriksson, Frank, Ugleholdt, H., Juhler, Marianne, Broholm, H. & Mathiesen, Tiit Illimar, 2020, In: Neurosurgical Review. 43, p. 643–653 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Granular clinical history and outcome in 51 patients with primary and secondary malignant meningioma

    Maier, A. D., Mirian, C., Haslund-Vinding, Jeppe Lohfert, Bartek, J., Guldager, R., Møller, Søren, Munch, Tina Nørgaard, Fugleholm, Kåre, Poulsgaard, L., Skjøth, Jane, Ziebell, M., Eriksson, L. E., Scheie, David, Poulsen, F. R. & Mathiesen, Tiit Illimar, 2022, In: Journal of Neurosurgery. 137, 5, p. 1347-1357 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Loss of H3K27me3 in WHO grade 3 meningioma

    Maier, A. D., Brøchner, C. B., Larsen, Christian Mirian, Haslund-Vinding, Jeppe Lohfert, Bartek, J., Ekström, T. J., Poulsen, F. R., Scheie, David & Mathiesen, Tiit Illimar, 2022, In: Brain Tumor Pathology. 39, p. 200–209 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Mitotic and proliferative indices in who grade iii meningioma

    Maier, A. D., Brøchner, Christian Beltoft, Bartek, J., Eriksson, Frank, Ugleholdt, H., Broholm, H. & Mathiesen, Tiit Illimar, 2020, In: Cancers. 12, 11, p. 1-10 10 p., 3351.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    TERTpromoter mutations in primary and secondary WHO grade III meningioma

    Maier, A. D., Stenman, A., Svahn, F., Mirian, C., Bartek, J. J., Juhler, Marianne, Zedenius, J., Broholm, H. & Mathiesen, Tiit Illimar, 2021, In: Brain Pathology. 31, 1, p. 61-69

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    DNA methylation profile of human dura and leptomeninges

    Maier, A. D., Christiansen, Steffan, Haslund-Vinding, Jeppe Lohfert, Krogager, M. E., Melchior, L. C., Scheie, David & Mathiesen, Tiit Illimar, 2023, In: Journal of Neuropathology and Experimental Neurology. 82, 7, p. 641–649

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    The experience of living with malignant meningioma

    Maier, A. D., Nordentoft, S., Mathiesen, Tiit Illimar & Guldager, R., 2024, In: Palliative and Supportive Care. 22, 2, p. 338-346 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    A snapshot of European neurosurgery December 2019 vs. March 2020: just before and during the Covid-19 pandemic

    Mathiesen, T., Arraez, M., Asser, T., Balak, N., Barazi, S., Bernucci, C., Bolger, C., Broekman, M. L. D., Demetriades, A. K., Feldman, Z., Fontanella, M. M., Foroglou, N., Lafuente, J., Maier, A. D., Meyer, B., Niemelä, M., Roche, P. H., Sala, F., Samprón, N., Sandvik, U. & 7 others, Schaller, K., Thome, C., Thys, M., Tisell, M., Vajkoczy, P., Visocchi, M. & on behalf of the EANS Ethico-legal committee, O. B. O. T. E. E. C., 2020, In: Acta Neurochirurgica. 162, 9, p. 2221-2233 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Parasagittal meningiomas

    Mathiesen, Tiit Illimar, 2020, Handbook of Clinical Neurology. Elsevier, Vol. 170. p. 93-100 8 p. (Handbook of Clinical Neurology, Vol. 170).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  50. Published

    Clinical studies and research integrity

    Mathiesen, Tiit Illimar, 2023, In: Acta Neurochirurgica. 165, 11, p. 3297-3298 2 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

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