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A 5‐year‐old intact male mixed‐breed cat weighing 4.5 kg was referred to our hospital with a left testicular mass. CT revealed mild heterogeneous contrast enhancement and calcification in the testicular mass. A well‐defined, contrast‐enhancing, multiloculated mass with fluid‐filled areas was extended from the testicular mass in the scrotum to the caudal aspect of the left kidney. The abdominal mass extended to the right crus of the diaphragm, and the gastrointestinal tract was compressed dorsally. Histopathology was consistent with teratoma. Characteristic CT findings in a feline testicular teratoma may include calcification and cystic areas. [ABSTRACT FROM AUTHOR]

An 11‐year‐old neutered male toy poodle was referred to our hospital due to a mass formation in the right cranial abdomen without any clinical signs. A gastrointestinal stromal tumour (GIST) was suspected based on diagnostic imaging and cytology. Imatinib was administered; however, the tumour size did not change, thus duodenal tumour resection was performed on Day 65. The tumour was on the antimesenteric border of the proximal duodenum; therefore, major and minor duodenal papillae were preserved, and the defect of the duodenum was reconstructed with a pediculated jejunal patch. The resected mass was histopathologically diagnosed as GIST with a clean margin. There were no serious postoperative complications associated with the obstruction of common bile duct and small intestine, and the patient's postoperative progress was good. These results suggest that duodenal reconstruction with a pediculated jejunal patch could be used for GIST in the proximal duodenum. [ABSTRACT FROM AUTHOR]

Background: Neutrophilic leucocytosis as a paraneoplastic syndrome may occur in dogs with lymphoma, renal carcinoma, rectal polyps and metastatic fibrosarcoma. However, the information on canine lung adenocarcinoma with neutrophilic leucocytosis is lacking. Objective: This study aimed to describe the clinical features and cytokine profiles of canine patients with primary lung adenocarcinoma and neutrophilic leucocytosis. Methods: Two dogs (cases #1 and #2), each with a solitary lung adenocarcinoma, were included. Both cases had leucocytosis and underwent lung lobectomy. The resected tumours were analysed for the expression of granulocyte colony‐stimulating factor (G‐CSF), granulocyte macrophage colony‐stimulating factor (GM‐CSF) and interleukin‐6 (IL6) by quantitative real‐time PCR compared with normal lung tissues. Results: At the initial examination, neither patient had any clinical signs or fever. White blood cell count (WBC) was 58,300/μl and 32,900/μl in cases #1 and #2, respectively. The gene expression of G‐CSF increased 6.7‐and 19.7‐fold in cases #1 and #2, respectively. The gene expression of IL6 markedly increased (30‐fold) in case #1, whereas it increased slightly (1.9‐fold) in case #2. On the other hand, that of GM‐CSF was slightly changed in both cases. The WBC count postoperatively decreased to within the normal range in both cases. The postoperative survival times were 347 and 118 days in cases #1 and #2, respectively. Conclusions: This study describes G‐CSF and IL6 producing lung adenocarcinoma associated with neutrophilic leucocytosis in dogs. Canine patients with pulmonary adenocarcinomas that have elevated G‐CSF and IL6 levels may have a guarded prognosis. Further investigations are needed to clarify the prognosis of canine cytokine‐producing lung adenocarcinoma. [ABSTRACT FROM AUTHOR]