Colic and dyspnea in a dog

Volvulus and incarceration of bowel by a hernia may cause a closed-loop obstruction, possibly with associated intramural accumulation of gas and/or blood. Standing lateral projections optimize diagnosis of strangulating obstructions. Accumulation of only fluid in the obstructed loop may resemble a tumor. Radiographic signs of exudation and peritoneal fluid accumulation may develop with closed-loop obstructions.     

A schirrhous anaplastic carcinoma in two dogs resembling mesothelioma

The clinical, laboratory, radiographic and pathological findings of two dogs with similar neoplasms are described. Both dogs were mature males of a large breed and had pleural and abdominal effusions containing neoplastic cells. Diffuse scirrhous thickening of the pleura and serosal surfaces was a prominent feature. A fibrous layer containing nests of neoplastic, epithelial-like cells was present on serosal surfaces. The morphological appearance of the cells was suggestive of either an atypical sclerosing mesothelioma or a scirrhous carcinoma. On the basis of ultrastructural and differential staining characteristics, a diagnosis of a scirrhous carcinoma of undetermined primary origin was made in one case and of prostatic urethral origin in the other case.     

Osteochondrosis in cattle.

Osteochondrosis is a poorly understood condition that affects many species, including cattle. Its incidence is not fully appreciated in the cattle industry for many reasons. Most of the reports show a male, purebred predilection, but this may simply be a result of the typical population for which medical attention is sought. With the increasing value of female breeding stock, a less skewed distribution of the disease will most likely result. Distribution of lesions is similar to that in the horse, with the stifle and tarsus most commonly affected. Treatment is divided into medical and surgical options, but neither seem to be strikingly effective as of yet. Surgical techniques include arthroscopy and arthrotomy, and both have their complicating factors. How osteochondrosis as a disease will affect the cattle industry is still to be decided. If the incidence rate does increase with more animals being valued for their economic potential, then treatment options will surely be reevaluated and refined.     

Reticular foreign bodies. Causative or coincidence?

A radiographically identified penetrating reticular foreign body is a near-certain cause of traumatic reticulitis, parareticular abscessation, or peritonitis. An extrareticular wire or nail is the most likely cause of reticulitis or peritonitis in an animal with compatible clinical signs. An immobile reticular foreign body may be trapped in the reticular mucosa, penetrating a mucosal fold (but not the reticular wall), or piercing the wall of the reticulum.     

RADIOGRAPHIC ASPECTS OF INFLAMMATORY LUNG DISEASE IN THE HORSE

The radiographic appearances of inflammatory lung disease in the horse are presented under three major morphologic categories: (a) parenchymal diseases, (b) airway diseases, (c) pleural diseases. Under the category of inflammatory parenchymal disorders, pneumonias of bacterial, viral, mycotic, parasitic, and immunologic origins are discussed. Airway disorders described included bronchitis, bronchiolitis, bronchiectasis, and emphysema. Pleural effusion as well as less common manifestations of pleural disease, are also discussed.