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Biomedical subjects

P Dyck

Publications and source records attributed to P Dyck.

32 records · Page 2Linked to original sources
PubMed1977

Peduncular hemiplegia following removal of large cerebellopontine angle tumors: discussion of a mechanism of brain stem injury.

Large cerebellopontine angle tumors distort and displace the brain stem. Two cases are reported in which ipsilateral hemiparesis ensued postoperatively. Compression of the contralateral cerebral peduncle against the free edge of the tentorium cerebelli appears to be the mechanism leading to this mesencephalic dysfunction. Review of the literature failed to reveal a discussion of this mechanism of brain stem injury. Extension of tumor through the tentorial hiatus appears to make the mesencephalon particularly vulnerable. Incision of the tentorium prior to removal of a tumor when it invades the incisural hiatus may have merit.

Aged↗
PubMed1976

The femoral nerve traction test with lumbar disc protrusions.

A easily performed test which can be carried out at the patient's bedside has been described. It is referred to as the femoral nerve traction test. Clinical evidence suggests it may have merit as an aid in the diagnosis of disc herniations that affect the upper lumbar spine.

Adult↗
PubMedDate not supplied

The stoop-test in lumbar entrapment radiculopathy.

Disabling neurologic symptoms with a paucity of focal signs are frequently encountered in patients who suffer from intermittent cauda equina compression syndromes. The stoop-test has diagnostic merit in these instances. The author's clinical experiences, the test, and its anatomic basis are described.

Cauda Equina↗
PubMedDate not supplied

Lumbar nerve root: the enigmatic eponyms.

Man's quest for recognition has not escaped the physician, whose contributions to medicine perpetuate his name in print. It is a final grasp for professional immortality, which for men like Imhotep and Hippocrates, has prevailed for millennia. This fervor was particularly evident in the latter 19th century, which created a flurry of eponyms, often two or more physicians publishing the same clinical observation. This article reviews the eponym epidemic as it relates to lumbar radiculopathy.

Egypt↗
PubMedDate not supplied

Spontaneous thrombosis of an arteriovenous malformation.

Extensive thrombosis of a cerebral arteriovenous malformation, not associated with clinically recognizable hemorrhage, appears to be exceedingly rare. Angiographic and operative verification of such an occurrence is described in a 4-year-old child. Computed axial tomographic and ultrasonographic findings are discussed. It is proposed that thrombosis of the anomaly occurred as a result of intravascular turbulence, promoted by progressive elongation and increasing tortuosity of the lesion.

Child, Preschool↗
PubMedDate not supplied

Os odontoideum in children: neurological manifestations and surgical management.

The os odontoideum is a congenital anomaly of the 2nd cervical vertebra. It is an ossicle that is separated from the body of the axis by a variable transverse gap. This weakens atlantoaxial stability. When ligamentous support also fails, subluxation ensues. Compressive myelopathy and vertebral artery obliteration may occur. Eight cases, all in children, were studied prospectively. The neurological manifestations and surgical indications and treatment are discussed.

Adolescent↗