Lyssens, A., Janssen, P., Clercx, C., Marichal, T., Radermecker, C., & Billen, F. (18 March 2026). Increased neutrophil extracellular traps formation in the bronchoalveolar lavage fluid of dogs with bronchiectasis. Frontiers in Veterinary Science, 13. doi:10.3389/fvets.2026.1786801 |
Lyssens, A., Roels, E., Clercx, C., & Billen, F. (14 November 2025). Proposed treatment algorithms for dogs with chronic bronchitis associated with irreversible airway changes: bronchiectasis and/or bronchomalacia. Frontiers in Veterinary Science, 12. doi:10.3389/fvets.2025.1686007 |
Lyssens, A., Bolen, G., Fastrès, A., Clercx, C., & Billen, F. (18 May 2025). Clinical Relevance of Distinguishing Between Three Endoscopy-Based Conditions, Bronchiectasis, Bronchomalacia, and Their Combination in Dogs: A Retrospective Study. Veterinary Sciences, 12 (5), 487. doi:10.3390/vetsci12050487 |
Snoeck, A., Jaffey, J. A., Billen, F., Rodrigues, N. F., Peeters, S., Le Goff, C., Cavalier, E., Peeters, D., & Clercx, C. (18 February 2025). Serum 25-hydroxyvitamin D and 24,25-dihydroxyvitamin D are decreased in dogs with sinonasal aspergillosis. Veterinary Journal, 310, 106318. doi:10.1016/j.tvjl.2025.106318 |
François, C., Billen, F., Noël, S., Etienne, A.-L., Seidel, L., & Bolen, G. (2025). Prevalence and characteristics of bladder wall thickening in dogs without lower urinary tract disease: an ultrasonographic study. Frontiers in Veterinary Science, 12, 1713723. doi:10.3389/fvets.2025.1713723 |
Lyssens, A., Janssen, P., Clercx, C., Coraline, R., & Billen, F. (2025). Detection of neutrophilic extracellular traps in bronchoalveolar lavage fluid of healthy dogs and of dogs with bronchiectasis, bronchomalacia and bacterial bronchopneumonia [Paper presentation]. ECVIM-CA 35th Annual Congress, Maastricht, Netherlands. |
Slusarek, A., Hamaide, A., Lefebvre, M., Heimann, M., Billen, F., & Bolen, G. (2025). Computed tomographic appearance of laryngeal lesions in 7 dogs. Frontiers in Veterinary Science, 12, 1633591. doi:10.3389/fvets.2025.1633591 |
Machiels, H., Fastrès, A., Lyssens, A., Bienes2;, T., Phan, K.-T., Roels, E., Billen, F., & Clercx, C. (2024). Utility of the IDEXX ProCyte Dx Analyser for the Measurement of Total Cell Counts in Bronchoalveolar Lavage Fluid From Dogs With Lower Airway Disease. Journal of Veterinary Internal Medicine. |
Vilcot, M., Roels, E., Clercx, C., & Billen, F. (18 September 2024). Association Between Signalment, Clinical Signs and Nasal Diseases Type and Location in Dogs and Cats [Paper presentation]. 34th Annual ECVIM-CA Congress, Lyon, France. |
Vangrinsven, E., Duprez, J. N., Meex, C., Taminiau, B., Daube, G., Billen, F., Mainil, J., & Clercx, C. (June 2024). Comparison of culture-dependent and -independent bacterial detection results on nasal swabs in dogs with nasal discharge. Journal of Small Animal Practice, 65 (6), 376 - 386. doi:10.1111/jsap.13734 |
Lyssens, A., Biénès, T., Fastrès, A., Machiels, H., Moreau, C., Tutunaru, A.-C., DEVILLE, M., Charlier, C., Clercx, C., & Billen, F. (2024). Three-minute nebulization of gentamicin in healthy dogs results in therapeutic concentrations in bronchoalveolar lavage fluid while remaining below the toxic range values in blood. American Journal of Veterinary Research, 1 - 8. doi:10.2460/ajvr.23.10.0247 |
Fastrès, A., Vangrinsven, E., Billen, F., Taminiau, B., Daube, G., & Clercx, C. (2024). Lung microbiota assessment in dogs with bronchomalacia. Journal of Veterinary Internal Medicine, 38 (1), 774. |
Biénès, T., Lyssens, A., Machiels, H., Hercot, M.-E., Fastrès, A., Alexandru-Cosmin, T., Deville, M., Charlier, C., Billen, F., & Clercx, C. (28 July 2023). Intranasal and Serum Gentamicin Concentration: Comparison of Three Topical Administration Protocols in Dogs. Veterinary Sciences, 10 (8), 490. doi:10.3390/vetsci10080490 |
Vangrinsven, E., Fastrès, A., Taminiau, B., Billen, F., Daube, G., & Clercx, C. (15 April 2023). Assessment of the nasal microbiota in dogs with fungal rhinitis before and after cure and in dogs with chronic idiopathic rhinitis. BMC Microbiology, 23 (1), 104. doi:10.1186/s12866-023-02828-7 |
Snoeck, A., Jaffey, J., Billen, F., Peeters, S., Le Goff, C., Peeters, D., Fernandes Rodrigues, N., Cavalier, E., & Clercx, C. (03 November 2022). Serum 25-hydroxyvitamin D and 24,25-dihydroxyvitamin D in dogs with sinonasal aspergillosis. Journal of Veterinary Internal Medicine, 36, 2455-2551. |
Rodrigues, N. F., Giraud, L., Bolen, G., Fastrès, A., Clercx, C., Boysen, S., Billen, F., & Gommeren, K. (2022). Response to letter regarding "Comparison of lung ultrasound, chest radiographs, C-reactive protein, and clinical findings in dogs treated for aspiration pneumonia". Journal of Veterinary Internal Medicine. doi:10.1111/jvim.16558 |
Fernandes Rodrigues, N., Giraud, L., Bolen, G., Fastrès, A., Clercx, C., Gommeren, K., & Billen, F. (May 2022). Antimicrobial discontinuation in dogs with acute aspiration pneumonia based on clinical improvement and normalization of C-reactive protein concentration. Journal of Veterinary Internal Medicine, 36 (3), 1082-1088. doi:10.1111/jvim.16405 |
Fernandes Rodrigues, N., Giraud, L., Bolen, G., Fastrès, A., Clercx, C., Boysen, S., Billen, F., & Gommeren, K. (March 2022). Comparison of lung ultrasound, chest radiographs, C-reactive protein, and clinical findings in dogs treated for aspiration pneumonia. Journal of Veterinary Internal Medicine, 36 (2), 743-752. doi:10.1111/jvim.16379 |
Gremillet, B., Porsmoguer, C., Bolen, G., Billen, F., Noël, S., Brutinel, F., & Busoni, V. (2022). Imaging Findings in Dogs and Cats With Presumptive Sclerosing Encapsulating Peritonitis. Frontiers in Veterinary Science, 9, 891492. doi:10.3389/fvets.2022.891492 |
Picavet, P., Hamon, M., Etienne, A.-L., Guieu, L.-V., Claeys, S., Billen, F., & Noël, S. (2022). Laryngeal paralysis secondary to cervical bite injuries in five dogs. New Zealand Veterinary Journal. doi:10.1080/00480169.2021.1951865 |
Canonne-Guibert, M., Menard, M., Maurey, C., Benchrekroun, G., Fernandes Rodrigues, N., Billen, F., & Clercx, C. (2021). Comparison of C-reactive protein concentrations in dogs with Bordetella bronchiseptica infection and aspiration bronchopneumonia. Journal of Veterinary Internal Medicine. doi:10.1111/jvim.16091 |
Vangrinsven, E., Fastrès, A., Taminiau, B., Billen, F., Daube, G., & Clercx, C. (2021). Variations in facial conformation are associated with differences in nasal microbiota in healthy dogs. BMC Veterinary Research, 17 (1), 100. doi:10.1186/s12917-021-03055-w |
Biénès, T., Fastrès, A., Vangrinsven, E., Billen, F., Garigliany, M.-M., & Clercx, C. (17 October 2020). Aspergillus qPCR testing on nasal swab: A useful tool for diagnosis and follow‐up of sinonasal aspergillosis in dogs? Journal of Veterinary Internal Medicine, 34 (6), 3058-3166. |
Canonne-Guibert, M., Roels, E., Menard, M., Desquilbet, L., Billen, F., & Clercx, C. (September 2020). Clinical response to 2 protocols of aerosolized gentamicin in 46 dogs with Bordetella bronchiseptica infection (2012-2018). Journal of Veterinary Internal Medicine, 34 (5), 2078-2085. doi:10.1111/jvim.15843 |
Fastrès, A., Canonne-Guibert, M., Taminiau, B., Billen, F., Garigliany, M.-M., Daube, G., & Clercx, C. (2020). Analysis of the lung microbiota in dogs with Bordetella bronchiseptica infection and correlation with culture and quantitative polymerase chain reaction. Veterinary Research, 51 (46), 1-12. doi:10.1186/s13567-020-00769-x |
Fastrès, A., Canonne-Guibert, M., Taminiau, B., Billen, F., Garigliany, M.-M., Daube, G., & Clercx, C. (08 November 2019). Analysis of the lung microbiota in dogs with Bordetella bronchiseptica infection and correlation with culture and quantitative polymerase chain reaction [Poster presentation]. 6th FARAH DAY, Liège, Belgium. |
Egyptien, S., Shimizu, N., Anne-Archard, N., Billen, F., Deleuze, S., & Noël, S. (26 October 2018). Pyocolpos in a spayed queen with imperforate hymen: a case report [Poster presentation]. FARAH DAY, Liège, Belgium. |
Vangrinsven, E., Girod, M., Goossens, D., Desquilbet, L., Clercx, C., & Billen, F. (September 2018). Comparison of two minimally invasive enilconazole perendoscopic infusion protocols for the treatment of canine sinonasal aspergillosis. Journal of Small Animal Practice, 59 (12), 777-782. doi:10.1111/jsap.12933 |
Hamon, M., Picavet, P., Etienne, A.-L., Guieu, L.-V., Billen, F., & Noël, S. (August 2018). Bilateral laryngeal paralysis secondary to traumatic nerve damage in two dogs [Poster presentation]. European College of Veterinary Surgeons – 27th Annual Scientific Meeting, Athens, Greece. |
Canonne, A. M., Billen, F., Losson, B., Peters, I., Schnyder, M., & Clercx, C. (May 2018). Angiostrongylosis in dogs with negative fecal and in-clinic rapid serological tests: 7 Cases (2013-2017). Journal of Veterinary Internal Medicine, 32 (3), 951-955. doi:10.1111/jvim.15092 |
Broux, O., Clercx, C., Etienne, A.-L., Busoni, V., Claeys, S., Hamaide, A., & Billen, F. (2018). Effects of manipulations to detect sliding hiatal hernia in dogs with brachycephalic airway obstructive syndrome. Veterinary Surgery, 47, 243-251. doi:10.1111/vsu.12735 |
Vangrinsven, E., Broux, O., Claeys, S., Clercx, C., & Billen, F. (2017). Investigation of laryngeal function and effect of surgery on laryngeal collapse in dogs with brachycephalic syndrome. Journal of Veterinary Internal Medicine, 31, 231. |
Roels, E., Bauer, N., LECUT, C., Billen, F., Soete, C., Peters, P., Moritz, A., Gothot, A., & Clercx, C. (September 2016). Investigation of the coagulation system in canine idiopathic pulmonary fibrosis [Poster presentation]. 26 th ECVIM-CA congress, Goteborg, Sweden. |
Canonne-Guibert, M., Billen, F., Tual, C., Ramery, E., Roels, E., Peeters, D., & Clercx, C. (July 2016). Quantitative PCR and Cytology of Bronchoalveolar Lavage Fluid in Dogs with Bordetella bronchiseptica Infection. Journal of Veterinary Internal Medicine, 30 (4), 1204-1209. doi:10.1111/jvim.14366 |
Canonne-Guibert, M., Roels, E., Caron, Y., Losson, B., Bolen, G., Peters, I., Billen, F., & Clercx, C. (2016). Detection of Angiostrongylus vasorum by quantitative PCR in bronchoalveolar lavage fluid in Belgian dogs. Journal of Small Animal Practice, 57 (3), 130-134. doi:10.1111/jsap.12419 |
Girod, M., Goosens, D., Volpe, R., Clercx, C., & Billen, F. (2016). Comparison of two non-invasive 2% enilconazole infusion protocols for treatment of canine sinonasal aspergillosis and importance of debridement for treatment efficacy. Journal of Veterinary Internal Medicine, 30 (1), 378. |
Roels, E., Gommeren, K., Farnir, F., Delvaux, F., Billen, F., & Clercx, C. (2016). Comparison of 4 point-of-care blood gas analyzers for arterial blood gas analysis in healthy dogs and dogs with cardiopulmonary disease. Journal of Veterinary Emergency and Critical Care, 00 (0), 1-8. doi:10.1111/vec.12469 |
Vangrinsven, E., Broux, O., Claeys, S., Clercx, C., & Billen, F. (2016). Endoscopic investigation of the gastroesophageal junction dynamics in dogs with brachycephalic syndrome. Journal of Veterinary Internal Medicine, 30, 379. |
Rizza, M., Liotta, A. P., Billen, F., & Bolen, G. (2015). Tracheal diameter in puppies. Veterinary Radiology and Ultrasound. |
Merveille, A.-C., Battaille, G., Billen, F., Deleuze, S., Fredholm, M., Thomas, A., Clercx, C., & Lequarré, A.-S. (May 2014). Clinical findings and prevalence of the mutation associated with primary ciliary dyskinesia in Old English Sheepdogs. Journal of Veterinary Internal Medicine, 28, 771. doi:10.1111/jvim.12336 |
Merveille, A.-C., Battaille, G., Billen, F., Clercx, C., Georges, M., & Lequarré, A.-S. (2009). Identification of a new mutation responsible for primary ciliary dyskinesia in dogs: a model for human PCD. Journal of Veterinary Internal Medicine. |
Billen, F., Clercx, C., & Peeters, D. (2008). Le point sur le diagnostic de l’aspergillose naso-sinusale chez le chien. Annales de Médecine Vétérinaire, 152(2), 61-70. |