PubMed Health⌕ Search

Biomedical subjects

T Dönmez

Publications and source records attributed to T Dönmez.

10 recordsLinked to original sources
PubMed1998

Intracranial meningiomas. Analysis of 344 surgically treated cases.

The authors present 344 (230 females, 114 males) surgical cases of intracranial meningioma. A total of 370 interventions (344 primary procedures, 10 reexplorations for neurologic deterioration, 16 operations for recurrence) were made. Mean follow-up was 38 months. The overall evaluation revealed that 306 (88.95%) patients were completely normal or in a better condition than before operation. 18 (5.23%) were in a worse condition after operation and 20 (5.81%) died. Results suggested that complications and mortality were mostly related to localization and large volume; we also still have problems with aggressive and malignant meningiomas.

Adult↗
PubMed1998

Anterior pontine hydatid cyst: case report.

We report a rare case of anterior pontine hydatid cyst. Diagnosis was established on magnetic resonance imaging (MRI) findings preoperatively and was confirmed during surgery and by laboratory findings of cyst fluid, and section of cyst wall. A classical suboccipital craniectomy was performed, followed by an approach through the floor of the fourth ventricle. After a failed attempt at the Dowling technique, we punctured the cyst, aspirated the contents, then extirpated the cyst membrane. The patient survived suffering only minor morbidity. The surgical technique and pontine myelotomy are discussed.

Brain Diseases↗
PubMed1992

Erythrocyte sedimentation rates in patients with renal cell carcinoma.

The importance of erythrocyte sedimentation rate (ESR) in patients with renal cell carcinomas (RCCa) is still controversial. ESR levels increased in over half of these patients. In this study, ESR levels of 19 patients with RCCa were investigated (85.368 +/- 5.914). In 11 patients in whom carcinomas were only localized in the kidney, the ESR levels were detected as 78.182 +/- 8.686. In 8 patients who had metastasis, the ESR levels were found as 95.250 +/- 6.427. ESR levels were also estimated in 15 healthy adult persons as control group (18.133 +/- 2.180). Mean ESR values were significantly higher in the tumor group than in the control group (p less than 0.01). There was no statistical difference of the ESR levels between the patients who had local RCCa and advanced RCCa (p greater than 0.05, NS). The removal of the tumoral mass caused the ESR levels to diminish. In conclusion, the ESR levels were not a good criteria in patients with RCCa for evaluating either prognosis or metastasis.

Blood Sedimentation↗
PubMed1991

Low density in the posterior aspect of the intervertebral disk in the patient with herniated nucleus pulposus. A prospective study of 50 cases.

It was previously reported that a low density are in the posterior aspect of the intervertebral disk is an additional computed tomography (CT) finding suggesting a herniated nucleuos pulposus. In this report the incidence of this finding, its correlation with the duration of symptoms and severity of herniation, were studied on 59 herniated intervertebral disks of 50 cases.

Adult↗
PubMed1990

Effects of various acidic and alkaline solutions used to dissolve urinary calculi on the rabbit urothelium.

It is well known that infection-induced stones (apatite, struvite), uric acid and cystine calculi in the urinary tract can be managed by the use of certain chemical solutions. We investigated the effects of various acidic and alkaline solutions on the rabbit urothelium. Acidic solutions (pH: 4.2) caused more urothelial injury as compared to alkaline solutions (pH: 7.6). Ureteral injury was more severe than the bladder injury. Magnesium-containing solutions caused less injury to the urothelium.

Animals↗
PubMed1990

Papillary carcinoma of the sphenoid sinus associated with sphenoid sinus abscess presenting as cavernous sinus syndrome. A case report.

Primary carcinoma of the sphenoid sinus is a rare tumor that may present with dramatic neuro-ophthalmological-symptoms and signs of which spheno-cavernous syndrome is the best known clinical entity. The most frequently encountered histological types of the sphenoid carcinomas are squamous cell carcinoma and papillary carcinoma, in decreasing order of frequency. In this article, a papillary carcinoma of the sphenoid sinus associated with sphenoid sinus abscess is presented. We are not aware of previously reported papillary carcinoma of the sphenoid sinus associated with sphenoid sinus abscess presenting as a cavernous sinus syndrome.

Abscess↗
PubMedDate not supplied

Management of problematic intracranial hydatid cysts.

The authors report four patients with intracranial hydatic cysts. One patient had a pontine lesion which was punctured and aspirated and the cyst wall removed with a satisfactory outcome. The second patient had multiple cysts which was comparable to meningeomatosis. She had a rapidly deteriorating neurologic condition which proved to be fatal in spite of two consecutive surgical interventions. The third patient had nine lesions although only six were evident on the MRI. All of the cysts were removed, while two cysts ruptured. Multiple paracardial cysts of this patient were surgically removed shortly after the craniotomy. The last patient, again with multiple intracranial hydatid cysts had safe, total removal of all cysts. The first postoperative control CT raised the possibility of recurrence since the CT was highly suggestive of a hydatid cyst. However, this was not confirmed in the follow-up CT examination. Problems and the solutions of management are discussed.

Adult↗
PubMedDate not supplied

Prostaglandin-independent decrease of sheep ureter contractility induced by bradykinin.

The mechanisms that mediate the actions of bradykinin on ureteral motility are poorly defined and mediation via prostaglandins has not been examined. Therefore, the effects of bradykinin on contractility and the possible mediator role of prostaglandins have been investigated in sheep ureter. At the concentrations of 10(-8), 10(-7) and 10(-6) M, bradykinin elicited marked reductions in contractile force. When ureteral strips were treated separately with 10(-6) M indomethacin, 2 x 10(-6) M sodium salicylate and 10(-5) M aspirin, each drug produced a significant decrease in contractile force. In strips in which prostaglandin synthesis was inhibited by the above concentrations of indomethacin, sodium salicylate and aspirin, 10(-7) M bradykinin significantly decreased the contractility. From these data, we concluded that in ureter bradykinin decreases contractility via a mechanism not involving prostaglandin generation.

Animals↗