Infiltrative Lipomatosis in the Neck and Colon of a Spanish Pure Breed Horse (original) (raw)
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Diffuse Infiltrative Gastrointestinal Lipomatosis in a Guinea Pig (Cavia porcellus)
2015
An intact adult male guinea pig (Cavia porcellus) went into cardiopulmonary arrest during a surgical procedure, and efforts at resuscitation were unsuccessful. Gross examination revealed a gastric rupture along the greater curvature of the stomach, which was associated with free blood and ingesta in the abdominal cavity, and a 2-cm nodular, partially circumferential, soft-to-firm mass within the pyloric region. Histologically, the pyloric mass was composed of sheets of infiltrative adipocytes expanding the muscular wall. Similar infiltrative sheets of adipocytes were present adjacent to the rupture site and within the small intestine, cecum, and colon. These findings are consistent with diffuse infiltrative lipomatosis, an exceedingly rare condition in human and veterinary species. This report is the first description of this rare disease in guinea pigs, and the concurrent involvement of both the stomach and intestines has not been reported in any veterinary species.
Small Intestine Strangulating Obstruction by Mesenteric Pedunculated Lipoma in a Criollo Mare
Acta Scientiae Veterinariae, 2020
Background: The abdominal lipomas are benign tumors of hyperplastic growth that originate from mesenteric adipose tissue, most commonly in the small intestine. Pedunculated lipoma strangulation occurs when the pedicle wraps around an intestinal loop and its mesentery, obstructing the intestinal lumen and blood supply of the affected segment. The aim of the present study is to report a case of a Criollo mare presenting a strangulating obstruction of the jejunum and ileum by a pedunculated lipoma, focusing the discussion in the causes and epidemiology of this alteration.Case: A 24-year-old Criollo mare with a body condition score 8 out of 9 was referred to a Veterinary Clinical Hospital of the Federal University of Pelotas (HCV-UFPel) presenting acute abdominal pain. At the hospital, the mare was presenting mild signs of abdominal discomfort. At the initial clinical exam, the mare had an increased heart and respiratory rates, normal body temperature, hyperemic mucous membranes, capill...
2011
Infi ltrating lipoma is an uncommon mesenchymal neoplasm that characteristically infi ltrates adjacent tissues. This type of lipoma is extremely rare in the stomach. Infi ltrative lipomas have been reported in dogs, cats, horses, calves and humans. The present study describes the occurrence of an infi ltrating lipoma with ulceration in the abomasum of a 6-month old lamb that was exposed accidentally. To the authors' knowledge, this is the fi rst report of an infi ltrative lipoma with ulceration in the pyloric region of this species. The mass was intramural and unmovable on palpation. Histopathologic examination revealed well differentiated adipocytes in submucosal layer of abomasums. Invasion of adipocytes had occurred in tunica muscularis. An infi ltrative lipoma was diagnosed based on microscopic fi ndings.
Omental Lipoma in a Slaughtered Lamb
Iranian Journal of Veterinary Medicine, 2024
Lipoma is a benign tumor of well-differentiated adipocytes that has been reported in some domestic animals. Omental lipomas in human and domestic animals are rare and reported as a case report. This study aimed to report an omental lipoma in a slaughtered sheep. In the observational examination of a sheep in a slaughterhouse in Tehran Province, Iran, and during the inspection of the abdominal area, a mass was seen on the greater omentum. The mass was sampled and placed in 10% formalin for histopathology. The mass was single, soft, dense, capsuled, oval, weighing 150 g, and 4.5×3.5 cm in size. Microscopic examination showed omental mass composed of uniform and mature lipocytes encased within a thick layer of immature connective tissue. The final diagnosis was primary benign lipoma. Lipoma can occur anywhere in the body where there are fat cells, and probably obesity and trauma are important risk factors for its occurrence. The size of the lipoma mass may help predict the age of the mass.
latrogenic lipoid pneumonia in an adult horse
2010
A 20-year-old gelding presented with a history of acute respiratory distress which began immediately after administration of a mineral oil and water mix, via nasogastric intubation, for treatment of suspected gastrointestinal dysfunction. An initial presumptive diagnosis of acute lipoid pneumonia was made; this was further supported by evidence of arterial hypoxaemia and oxygen desaturation on arterial blood gas analysis, ultrasonographic signs of bilateral ventral lung consolidation and a mixed bronchoalveolar-interstitial lung pattern seen on thoracic radiographs. Despite intensive supportive therapy the horse's condition continued to deteriorate and the decision was made for humane euthanasia. Gross necropsy findings supported the clinical diagnosis of lipoid pneumonia.
Gastroduodenal ulceration is found in 90% of Thoroughbred race horses. The clinical and economical importance of gastric ulcers and the scarce information about the subject in Brazil make this investigation essential. The aim of this study was to evaluate and map grossly and microscopically the gastroduodenal lesions in race horses according to the Updated Sidney System and the Equine Gastric Ulcer Syndrome Council (EGUSC) Classification. Necropsy was performed in 14 horses and macroscopy was described. Samples of the gastric regions (14 animals -nonglandular fundus, glandular fundus, margo plicatus, antrum and pylorus) and duodenum (9 animals) were obtained and processed for routine histopathology. Macroscopic evaluation of the lesions based on the Updated Sidney System showed that 100% of the horses had gastric ulcers or erosions, mainly located at the margo plicatus. The Updated Sidney System also allowed a macroscopic gastritis classification and revealed that seven horses had enanthematous gastritis (50%), four had hemorrhagic gastritis (28, 6%), and three had erosive gastritis (21, 4%). Based on the EGUSC Classification, the most frequent score is 2 (50%). The score 3 was found in 35,7% of the horses and the scores 1 and 4 in 7,1% each. The score 0 which means intact epithelium, was not seen in any of the horses. Histopathological evaluation based on the Updated Sidney System revealed mild to severe lymphoplasmacytic infiltrate, sometimes with areas of neutrophilic infiltrate, demonstrating some activity mainly in the injured mucosa. Lymphoid follicles were found in 92.9% of the animals. This study confirms that gastric ulceration in Brazilian race horses is common, and the majority consists of chronic ulceration of the margo plicatus. The use of the histopathological division of the Updated Sidney System demonstrated that chronic gastritis was predominant and the majority of cells in the inflammatory infiltrate were lymphocytes and plasmocytes. This study also showed that the association of the Updated Sidney System and the EGUSC Classification is feasible and leads to a better understanding of equine gastroduodenal ulceration. Although usually neglected, these lesions may be involved in low performance rates and therefore other investigations are necessary for the elucidation of the etiology and pathogenesis of these ulcers.
Journal of Equine Veterinary Science, 2009
The objective of this study was to evaluate duodenocecostomy in horses performed through a ventral midline laparotomy and report its influence on body weight, glucose absorption, serum components, and characteristics of jejunum, cecum, and large colon histology. Four horses were submitted to the duodenocecostomy technique through a ventral midline laparotomy with animals in dorsal recumbency under inhalation anesthesia, followed by abdominal exploration. A side-to-side anastomosis was performed between the duodenojejunal flexure and the base of the cecum with two simple continuous suture lines of the serosal and muscular layers. The size of the opening created was approximately 2 cm in diameter. The mucosa layer was not sutured. After 30 days, animals were submitted to a second laparotomy to check the patency of the duodenocaecal fistula. During both laparotomy procedures, excisional biopsies of different segments of the gastrointestinal tract were performed. Information on physical examination findings, results of hematologic and histopathologic evaluations, and oral glucose absorption test were recorded. The horses did not have significant weight loss from baseline, and absorption curve of glucose did not significantly vary from baseline. Only triglycerides had significant alterations. Histologic evaluation of jejunum, cecum, and large colon did not show alterations of intestinal structure and morphology. We concluded that the proposed technique, principally in relation to the fistula size and not suturing the mucosa layer, allowed partial or total occlusion of the fistulae without the necessity of a second surgery and avoided the permanent bypass of ingesta and weight loss.
Diagnostic ultrasonography in cattle with abdominal fat necrosis
The Canadian veterinary journal. La revue vétérinaire canadienne, 2012
This study describes the ultrasonographic findings in 14 cows with abdominal fat necrosis. Ultrasonography of the abdomen revealed the presence of heterogeneous hyperechoic masses and hyperechoic omentum with localized masses floating in a hypoechoic peritoneal fluid. A hyperechogenic rim was imaged around both kidneys. The intestines were coated with hyperechoic capsules and the intestinal lumens were constricted. Ultrasonographic examination of the pancreatic parenchyma showed an overall increased echogenicity which was homogenously distributed in 3 cases. A diagnosis of abdominal fat necrosis was made with ultrasound-guided biopsy of the echogenic masses, and thereafter at postmortem examination. Results from this study demonstrate the efficacy of ultrasonography as an imaging modality for antemortem diagnosis of abdominal lipomatosis in cattle. To the authors' knowledge, this study is the first that illustrates ultrasonographic findings in cattle affected with abdominal lipo...