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Biomedical subjects

G Ayberk

Publications and source records attributed to G Ayberk.

7 recordsLinked to original sources
PubMed2004

Spontaneous resolution of "protruded" lumbar discs.

Decreasing size of disc material that has herniated, whether "contained" or "protruded" has previously been described and sometimes this can be so complete that residual material is barely visible. In a retrospective clinical survey, from among almost 2180 consecutive patients admitted during 1994 - 2002 with low back pain; due to our low follow-up ratios and high price of the magnetic resonance imaging (MRI), only 42 patients with a lumbar disc protrusion could be found who had two MRI scans obtained at least five weeks apart. Among these, 4 patients were spotted with a totally resolved disc protrusion. T (2)-weighted MRI images were suggesting shrinkage due to dehydration and regression within the annulus of protruded disc fragments that had not fully migrated. Our patients are further examples for total resolution of the large "protruded" disc without any treatment; and since concomitant disc protrusions at other levels persisted, the resolution of these discs is supposed to be spontaneous.

Adult↗
PubMed2003

Diagnostic value of bed-side ultrasonographic evaluation by anterior approach in spine disorders? A preliminary report.

A preliminary investigation was planned so as to evaluate the effectiveness of ultrasonography for bed- side evaluation of patients with suspected spinal pathology. Its application by anterior approach in 37 cases showed that herniated disc material, bone, epidural fat, scar tissue, tumoral masses and their relation to the interspace and dural sac could be visualized. A short description of the sonographic appearance of normal and pathological structures was also given in comparison to Computed Tomography or Magnetic Resonance images. Ultrasonographic examination was inadequate in five of the patients due to obesity, meteorism or diminution of the intervertebral disc space. Advantages of this technique are the availability almost in every hospital, the ease of obtaining images at various angles, avoiding the use of x-rays and the low price. The disadvantages are its relatively poor definition as compared to Computed Tomography or Magnetic Resonance Imaging and its inability to see through bone.

Humans↗
PubMed2002

Redundant ventriculomegaly associated with brain abscess.

OBJECTIVE: The aim of this clinical retrospective review was to emphasize the recently observed high incidence of ventriculomegaly, a wellknown complication of brain abscesses. MATERIALS AND METHODS: Among twelve brain abscess cases operated on in our institution during five years, the most common surgical procedure was burr-hole aspiration applied in ten of the cases, while in the remaining two a standard craniotomy and total excision was performed. Ventriculomegaly was assessed by the "Evans' Ratio" values calculated using the frontal ventricular horn measurements made on axial tomographic images. RESULTS: The signs, symptoms, radiological findings and clinical features of the patients were in accordance to the pertinent literature. The only finding worth commenting on was the surprisingly high incidence of ventriculomegaly (5/12) and periventricular edema (4/12). Concerning the outcome, there was only one death. CONCLUSIONS: The "Evans' Ratio" either worsened or remained the same in four out of five cases during the early postoperative period (ranging from one to three months) and it got better in one case in the late postoperative control (1.5 years). Furthermore, periventricular edema persisted just in the same manner in three of the four cases.

Adolescent↗
PubMed2002

Imaging problems and clinical findings in adolescent lumbar disc herniation: a retrospective study.

OBJECTIVES: Disc degeneration probably begins in childhood although low back pain and radicular leg pain is not as common a complaint as in adults. However as yet no explanation exists for the appearance of advanced degenerative changes seen occasionally in patients in their twenties. PATIENTS AND METHODS: We report 12 adolescents between the ages of 15 and 20 among a total of 1068 cases with radiologically demonstrated lumbar disc herniations treated between March 1991 and March 1996. RESULTS: Most of their findings were in good agreement with earlier and more recent reports. The only different findings worth commenting upon were the common presence of multiple level disc herniations, and the occasional presence of a so called "fractured epiphysial plate". CONCLUSION: Depending on magnetic resonance imaging findings coupled with computed tomographic images; we suppose that the so called "fractured bone fragments of the vertebral epiphysial rim impinging on the spinal canal at multiple levels" and "wedges of bone attached to the disc end plate and associated bony defects in the margins of the posterior vertebral bodies" reported to be demonstrated on computed tomographic (CT) images may in fact be false images. Inappropriately angled CT scan slices may cut partly through the epiphysial ring which has totally been distracted backwards together with the firmly attached avulsed disc annuli, designated as an "epiphysial avulsion"; giving rise to the mistaken interpretation as a "fractured epiphysial ring" appearance. Such a mechanism may also involve the posterior longitudinal ligament, which is firmly attached to the neighboring annuli, accounting for the common multilevel involvement.

Adolescent↗
PubMed1992

Primary intraventricular oligodendroglioma.

Oligodendroglioma, usually found in the cerebral hemispheres may invade the ventricles, however primary intraventricular oligodendroglioma is quite uncommon with only a limited number of cases reported in the literature. A 39-year-old woman harbouring a primary oligodendroglioma of the left lateral ventricle was treated by subtotal removal of the tumour through a left frontal transcortical transventricular approach. The clinical, radiological and surgical details of the case are presented in correlation with the current data on oligodendrogliomas. Benefits of postoperative irradiation are stressed.

Adult↗
PubMedDate not supplied

Thoracic outlet compression syndrome: clinical evaluation and surgical results of 94 cases.

Thoracic outlet compression syndrome (TOCS) is not a rare entity. It needs to be recognized, and patients need to be analysed from a neurologic perspective. In this paper, 94 patients with TOCS admitted to Hacettepe University Hospitals, between the years 1975-1988, have been analysed in respect to age, sex, signs, symptoms and surgical techniques. A review of the literature in the management of TOCS has been made. We experienced no operative mortality and a 12% morbidity rate. We believe that more attention should be given to this diagnosis and treatment to relieve symptoms.

Adult↗