Biomedical subjects
W T Wolvekamp
Publications and source records attributed to W T Wolvekamp.
Radiology of the acute abdomen.
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[Roentgenologic studies of the spine of small domestic animals. Myelography. II].
The technique and interpretation of myelography in small animals are described in the present paper. The practical use of cervical myelography is discussed in detail, and the more specialist lumbar method is introduced. Myelographic changes, including a differential diagnosis, are reviewed in addition to normal X-rays. An extensive collection of radiographic instances is used to illustrate normal and abnormal findings.
Traumatic diaphragmatic hernia in the dog and cat.
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Contributions of the glossopharyngeal nerve and the pharyngeal branch of the vagus nerve to the swallowing process in dogs.
The separate contributions of the glossopharyngeal nerve and the pharyngeal branch of the vagus nerve to the innervation of the pharyngeal muscles were studied first in 10 canine cadavers by dissection of the pharyngeal plexus and the pharyngeal muscles. In 10 other dogs, the parent trunks and 1st division of the glossopharyngeal nerve and the pharyngeal branch of the vagus nerve were electrically stimulated. The evoked stimulation potentials were recorded from the stylopharyngeal, hyopharyngeal, thyropharyngeal, and cricopharyngeal muscles. One of the parent trunks was then transected, and the effects on the swallowing process were observed clinically and by contrast videofluorography. Denervation potentials resulting from nerve transection were recorded in the soft palate, the hyopharyngeal, thyropharyngeal, and cricopharyngeal muscles. The pharyngeal plexus was composed of branches originating from the glossopharyngeal nerve and the pharyngeal branch of the vagus nerve. In most dogs, the pharyngeal muscles and the soft palate were innervated ipsilaterally by both nerves. The swallowing process was more severely disturbed after bilateral transection of the pharyngeal branch of the vagus nerve than after bilateral transection of the glossopharyngeal nerve.
An unusual case of lead poisoning in a honey buzzard (Pernis apivorus).
The diagnosis and treatment of a case of lead poisoning in a honey buzzard (Pernis apivorus) are described. Presenting signs were diarrhoea and weakness. Lead poisoning was suspected after radiography and confirmed by measuring the lead concentration in a venous blood sample. Comparison values of venous lead concentrations in healthy racing pigeons (Columba livia) were established. A method for the removal of lead shor from the gizzard of birds with a bronchoscope and grasping forceps under fluoroscopic control is described.
[Roentgenologic studies of the spine in small domestic animals. 1. Routine studies].
The technique and interpretation of plain spinal radiography in the dog and cat are reviewed in the present paper. Technical aspects are briefly discussed. More emphasis is placed on the systematic approach of interpretation based on the recognition of specific X-ray signs that are characteristic of spinal disease. Radiographic illustrations of all important matters are included.
[Tuberculosis in raptorial birds. Clinical cases and differential diagnosis].
Four cases of avian tuberculosis in two goshawks (Accipiter gentilis gentilis), a lanner falcon (Falco biarmicus sp.) and a kestrel (Falco tinnunculus tinnunculus) are reported. All birds, except for the kestrel, were affected with generalized tuberculosis. Clinically, the lanner falcon and kestrel showed lameness due to tuberculous arthritis of a knee joint. One of the goshawks died suddenly. On post-mortem examination, the bird was found to be emaciated, and there was involvement of one knee joint. The other goshawk showed convulsive seizures for three weeks before she died. Histological examination revealed tuberculous meningitis and encephalitis. The diagnosis was based on the detection of acid-fast organisms in every case and was verified in three cases by cultures of the causative organism. Tuberculosis should be considered in the differential diagnosis of emaciation, lameness, arthritis, skin lesions, convulsions and frounce in raptors.
[Osteomyelitis in the limbs of dogs and cats. A radiographic review (author's transl)].
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Lung infarction and epidermoid carcinoma in a dog.
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Pyloric stenosis caused by hypertrophic gastritis in three dogs.
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[Enterological complications following ovariohysterectomy in dogs (author's transl)].
Of 109 dogs submitted with complications following ovariohysterectomy, twenty were found to show enterological problems. Presenting symptoms in these animals consisted in vomiting, diarrhoea and emaciation. A large number of animals also showed body temperatures above 39 degrees C. An irregular, often painful mass was palpable on examination of the mesogastrium in seventeen cases. Plain radiography revealed the features of ileus in ten dogs, a mass of soft tissues in the abdominal cavity in six and the pattern of peritonitis in five cases (two animals were classifiable with two groups). One dog did not show any changes. Laparotomy was performed in all twenty dogs. In view of the extent of the lesions, euthanasia was performed in ten animals. Partial enterectomy was performed in the other ten; some of these dogs are still alive at the time of writing. The findings at laparotomy and subsequent post-mortem examination, if any, may be summarized as follows: - there were adhesions between the ovarian-stump granulomas and an intestinal loop in five animals; - twelve animals showed adhesions between the ovarian-stump granuloma and the intestines which also adhered to each other; in five of these bitches, the intestinal loops were also attached to the wall of the abdomen, and also to the cervix stump in two cases; - three dogs only showed adhesions between intestinal loops; the cervix stump was involved in the adhesions in one dog.
Congenital subvalvular pulmonic stenosis in a cat.
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[Bone tumours in the shoulder area (author's transl)].
An introduction into the basic principles of radiographic interpretation of bone tumours is presented. Patient material is selected in order to demonstrate the different appearances of bone tumours. The basic patterns of periosteal response are discussed. A short discussion of differential diagnosis is included.
Esophageal squamous cell carcinoma in two cats.
Esophageal carcinomas in two cats are described. The main clinical sign was regurgitation of food and fluids. Radiographic examination revealed severe esophageal abnormalities in both cats. In the second cat, the radiographic appearance of the esophagus together with the esophagoscopic findings provided a presumptive diagnosis of neoplasia. Histologic examination in both cats revealed squamous cell carcinoma with metastases.
Heartworm infected dogs in the Netherlands.
Heartworm infected small animal patients are seldom seen in the Netherlands, because the parasite's life cycle cannot be completed in this climate. We report here four cases of the disease in dogs brought to the Netherlands from endemic heartworm areas. The initial diagnosis was based upon this knowledge and clinical signs (low exercise tolerance and coughing). The diagnosis was confirmed by the radiographic finding of variable pulmonary artery enlargement, the electrocardiographic finding of right ventricular hyperptrophy and the presence of microfilariae in the peripheral blood. Treatment resulted in recovery in three of these patients but the fourth died soon after initiation of the therapy.
Esophageal hiatal hernia. Case report of a dog and a cheetah.
Case reports of a paraesophageal hiatal hernia in a French bulldog and an invagination of the stomach into the esophagus in a cheetah are presented. In both cases there was an enlarged hiatus and in the cheetah the hiatus was clearly bounded by a muscular loop. Treatment consisted of surgical narrowing of the hiatus. The pathophysiology of hiatal hernia is discussed with reference to experimental studies in dogs.
Multiple polyps of the gastric mucosa in two dogs.
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