This study reports the clinical value of sentinel lymph node (SLN) mapping with indirect lymphography (IL) using iodized oil (IO) as a marker injected preoperatively around the site of the primary tumour and radiography or tomodensitometry for imaging. Surgical extirpation of the node was performed following peritumoural injection of methylene blue (MB). Twenty nine dogs affected by 30 palpable solid tumours were prospectively studied. SLNs were identified by IL in 96.6% of the IL studies. IL followed by MB studies were performed in 25 dogs (26 studies). In these studies, agreement between IL and MB was observed in 84.6%. One dog had a minor complication following IO injection. This protocol represents an attractive alternative to scintigraphy for SLN mapping. This less technically demanding protocol may provide a wider access to SLN identification for application in veterinary oncology.

Crenosoma vulpis is a nematode lungworm found in wild and domestic canids in some parts of North America and Europe. Reported radiographic findings are nonspecific and consist of a combination of bronchial and interstitial changes of variable severity. This retrospective, case series study aimed to describe thoracic computed tomographic (CT) findings for a group of dogs with confirmed crenosomosis. Selection criteria were presentation with a chronic cough during the period of January 2016 to February 2017, evaluation by thoracic CT, and final diagnosis of C. vulpis infection based on bronchoscopic findings, bronchoalveolar lavage fluid analysis, and quantitative polymerase chain reaction. Medical records and CT images were retrieved and reviewed by a board-certified veterinary internist, a veterinary internal medicine resident, two board-certified veterinary radiologists, and a veterinary radiology intern, and findings were recorded. Three dogs met inclusion criteria. Thoracic CT findings for all dogs included the following: diffuse bronchial wall thickening, multifocal peribronchial ground glass attenuation, consolidation of the pulmonary parenchyma, and cylindrical bronchiectasis. In two dogs, the bronchial wall thickening was irregular to nodular, which was consistent with the bronchoscopic findings. Two dogs showed pulmonary parenchymal bands. Thoracic computed tomographic changes in dogs with C. vulpis are consistent with those seen on thoracic radiographs and crenosomosis should be considered in dogs with these findings.

Various types of endoscopic biopsy forceps have been investigated in dogs. The Multibite (MB) are multiple-bite forceps that collect up to four tissue specimens in a single pass through the endoscope, reducing procedure time. The authors prospectively investigated its clinical utility by comparing procedure times and diagnostic quality of samples obtained with the MB to that of biopsies performed with a single-bite forceps (SB), in 21 dogs with gastrointestinal disorders. When comparing the depth, crush artefacts and diagnostic adequacy of the gastric and duodenal biopsies, there was no significant difference between the MB and SB forceps. The procedure time was significantly longer with the MB. There was no learning curve effect, and there were no reported adverse events. This study failed to demonstrate any significant clinical advantage associated with the use of the Multibite forceps over that of conventional disposable SB forceps.

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