PubMed Health⌕ Search

Biomedical subjects

R F Langham

Publications and source records attributed to R F Langham.

At least 19 recordsLinked to original sources
PubMed1990

Cysticerci of Taenia mustelae in the fox squirrel.

The liver of a fox squirrel (Sciurus niger rufiventer) contained many clear, spherical cysts approximately 1 mm in diameter throughout the parenchyma. On dissection, most of these exhibited a dense, white area with four muscular suckers at a single point on the bladder. Based on the size of the organisms, the characteristically tiny hooks on the scolex and the location of the cysts in this host, the parasites were identified as cysticerci of Taenia mustelae. This is the first report in this host. The parasites were surrounded by an intense inflammatory response consisting primarily of lymphocytes mixed with some eosinophils, and early deposition of fibrous connective tissue.

Animals↗
PubMed1986

Feline sporotrichosis: a report of five cases with transmission to humans.

Sporotrichosis was diagnosed in five cats. Seven humans exposed to these cats subsequently developed the disease. All feline cases developed draining ulcers, and in four of five cases there was disseminated cutaneous involvement. Histologically, numerous Sporothrix organisms were noted in cutaneous lesions and overlying exudate. The seven humans who became infected were involved in cleaning and medicating cats with the disease; all human patients developed a localized lymphocutaneous form of sporotrichosis. In four of the human cases there was no history of an associated penetrating wound. The large number of Sporothrix organisms is a distinct feature of feline sporotrichosis and indicates that the cat may be the only domestic animal species that can readily transmit this disease to humans. In addition, any contact with the draining lesions of affected cats offers the potential for human infection.

Adult↗
PubMed1978

Tetany associated with magnesium deficiency in suckling beef calves.

Sudden death losses occurred in 4-month-old beef calves with clinical signs of muscular dysfunction, including tetanic spasms. Gross lesions were not diagnostic. Microscopic lesions consisted of deposition of calcium salts in the elastic fibers of the arteries in the heart, lungs, and spleen and in the trabeculae of the spleen. Focal areas of interstitial nephritis were characterized by infiltration of lymphocytes and plasma cells. Samples of hay and silage that the cattle were consuming were low in magnesium. Calves with spasms responded to magnesium salts given intravenously, and losses ceased after a magnesium-containing supplement was fed free choice to the calves and cows.

Animals↗
PubMed1978

Viral inclusions in raccoon liver cells.

Three young raccoons (Procyon lotor), two from Michigan and one from Arizona, died suddenly from acute infections. Intranuclear inclusion bodies and viral particles typical of herpesvirus were seen in liver cells from all three. Inclusions also were seen in the nuclei of endothelial cells in the lung, liver, glomeruli and reticuloendothelial cells of the spleen. The source of the infection was not determined, but possible transmission from other species could not be ruled out.

Animals↗
PubMed1977

X-ray therapy of selected odontogenic neoplasms in the dog.

X-ray therapy was used on 14 selected adamantinomas and 2 ameloblastic odontomas, with beneficial results. The recommended x-ray treatment is a minimum total dose of 3,600 rads and a maximum of 4,200 rads, at a half-value layer of 1.5 to 2 mm of Cu. Five to 6 treatments were spread over a 10- to 12-day period.

Ameloblastoma↗
PubMed1975

Eyelid neoplasms of dogs.

A survey of 202 canine eyelid neoplasms was conducted to identify the prevalence of tumor types and their biological behavior. Sebaceous gland tumors, melanomas, and papillomas made up 82.1% on neoplasms studied. Sebaceous tumors were most frequently encountered, comprising 44% of canine eyelid tumors. Benign tumors (75.3%) were more prevalent than malignant forms (26.7%), and epithelium tumors outnumbered those of mesenchymal origin 134 to 23. A slightly higher percentage of neoplasms were removed from upper eyelids (40.2%) than from lower eyelids (30.2%). The average age of dogs with eyelid tumors was 8 years. Malignant tumors were comparatively larger than benign forms, but metastasis of eyelid tumors was not observed.

Adenocarcinoma↗