An inexpensive sedimentation chamber for the preparation of cytologic specimens of cerebrospinal fluid.

An inexpensive sedimentation chamber to obtain cytologic specimens of cerebrospinal fluid (CSF) is described. The device, which has a total cost of about $5.00 can be built in few minutes.

Cytology of the normal and abnormal choroid plexi in selected domestic mammals, wildlife species, and man.

A cytologic study of the choroid plexi of animals and humans was carried out using impression smears (imprints, imp) to understand better the cellular changes that occur in the cerebrospinal fluid in the case of disease. The samples, totaling 756 imp were from 11 dogs (239 imp), 10 horses (219 imp), 1 mule (23 imp), 3 cattle (69 imp), 1 sheep (19 imp), 2 pigs (39 imp), 1 deer (20 imp), 4 monkeys (22 imp), and 7 humans (106 imp). The samples came from individuals clinically free of neurologic disease, as well as from a few abnormal cases.

Excretory plugs from the choroid plexus in the cerebrospinal fluid of dogs with neurological disease: possible role in the formation of corpora arenacea.

Cytological specimens of cerebrospinal fluid (CSF) from 13 (6.5%) of 200 dogs with various neurological diseases contained excretory plugs (EPs) originating from choroid plexus cells (ChPCs). The presence of EPs was not related to age, breed or sex, or to any particular neurological disease.

Large granular lymphocyte pleocytosis in the cerebrospinal fluid of a dog with necrotizing meningoencephalitis.

The cerebrospinal fluid of a dog with necrotizing meningoencephalitis showed pleocytosis, produced mostly by large granular lymphocytes. The presence of such lymphocytes in the cerebrospinal fluid of dogs with neurological disease appears not to have been reported previously.

Cystic fibrous osteodystrophy of the jaw in two pet kinkajous (Potos flavus).

Two kinkajous (Potos flavus), which were separately owned as pets and fed an inappropriate diet consisting almost exclusively of succulent fruits developed cystic fibrous osteodystrophy of the jaw. In both cases there was a prominent enlargement of the chin and lower jaw, decalcification of facial bones, softening of the gingiva, and severe malocclusion, but no other relevant changes. Clinical, radiographic and histological findings were consistent with cystic fibrous osteodystrophy.

Cytology of 100 samples of abdominal fluid from 100 horses with abdominal disease.

A total of 100 samples of abdominal fluid (AF) from 100 horses with abdominal disease were evaluated by cytology. Cytology results were subsequently correlated with the final outcome of the disease. The horses were classified into 4 groups: Group I, horses that were treated with conventional (nonsurgical) therapy and recovered; Group II, horses that had surgery and survived; Group III, horses that had surgery but died; and Group IV, horses that were subjected to euthanasia prior to surgery.

Cytologic findings in 43 cases of blastomycosis diagnosed ante-mortem in naturally-infected dogs.

A retrospective study of the cytology of blastomycosis was undertaken. Sixty-one samples from 43 naturally infected dogs diagnosed ante-mortem by means of cytology were reviewed. Skin and lymph nodes rendered the highest number of positive samples with 17 out of 18 and 14 out of 17 respectively.

The cytology of squamous cell carcinomas in domestic animals.

A series of 40 tumors with a proven diagnosis of squamous cell carcinoma for which both histology and cytology were available were classified according to their histologic appearance as well differentiated, moderately differentiated, and poorly differentiated. The Romanowsky-stained cytology specimens were reviewed. When available, Papanicolaou-stained smears were included.

Malignant fibrous histiocytoma of the giant cell type in a cat.

A malignant fibrous histiocytoma (MFH) of the giant cell type was diagnosed in a 10-year-old female Domestic Short-Hair cat. The tumour was surgically removed but recurred after two months and the animal was destroyed. The most prominent histological feature was the presence of numerous multinucleated giant cells scattered among malignant-looking mononuclear tumour cells.

Extracorporeal bypass of the right ventricle and pulmonary trunk using autogenous lungs for oxygenation in the dog.

A technique for right heart bypass using autogenous lungs for oxygenation was evaluated. Venous blood was collected by a catheter placed in the right atrium and caudal vena cava. The blood then passed through the extracorporeal unit and was pumped into the pulmonary circulation.

Equine congenital cutaneous papillomatosis: a report of 5 cases.

Four cases of equine congenital cutaneous papillomatosis were found during a review of 555 cutaneous tumours received at the pathology department, Ontario Veterinary College, during a 10-year period. A fifth case received after that period was also included. Two of the tumours were found in Thoroughbreds, one in a Standardbred, one in an Arabian and in one case the breed was not specified.