Search PubMed⌕ Search

Biomedical subjects

M Yilmaz

Publications and source records attributed to M Yilmaz.

At least 91 records · Page 5Linked to original sources
PubMed1998

Cervical aortic arch with aneurysm formation.

Cervical aortic arch is a very rare anomaly presented as a pulsatile mass on the neck and usually with symptoms of dysphagia, cough and hoarseness. Rarer than the cervical aortic arch, is the aneurysm formation and, despite the equal sex distribution of cervical aortic arch, aneurysm formation always occurs in young females with only nine cases reported. We report herein a 24-year-old woman, diagnosed as cervical aortic arch with aneurysm formation due to basophilic degeneration, treated successfully with surgical intervention. To our knowledge no similar case has been reported.

Adult↗
PubMed1998

The distally based superficial sural artery island flap: clinical experiences and modifications.

The coverage of defects of the Achilles tendon, malleoli, and heel remains a challenge to reconstructive surgeons. The distally based superficial sural artery island flap is vascularized by the median superficial sural artery, posterolateral septal perforators originating from the peroneal artery, neurovascular arteries of the sural nerve, and combinations of these systems as suprafascial plexus. We used distally based superficial sural artery island flaps for the reconstruction of defects of ankle, malleolus, and heel in 17 patients between 1991 and 1997. The largest flap we have used until today was 12 cm in width and 15 cm in length. All flaps have survived. However, we observed venous congestion and edema in two flaps. Also, marginal necrosis occurred in two flaps for which we had not taken the sural nerve with the flap. After these complications, we made some modifications. We left a skin extension over the fasciovascular pedicle and used it as a roof of the tunnel. We took the sural nerve and the deep fascia in all cases. The main advantage of this flap is a constant and reliable blood supply without sacrifice of a major artery. In addition, this is a one-stage, safe and easy procedure that can be used for large defects.

Adolescent↗
PubMed1998

Replacement of aortic root with valved tubular prosthesis in a ten-year-old child with infective endocarditis--a case report.

Aortic root abscess, aneurysm of sinus Valsalva, severe aortic valve insufficiency, and a fragile aortic wall caused by infective endocarditis were found in a 10-year-old child. Aortic valve replacement was intended as a preoperative strategy, but one of modifications of Cabrol had to be used urgently because of aortic root rupture between right atrial and aortic connection just after pericardiotomy.

Aorta↗
PubMed1998

Marjolin's ulcer and chronic burn scarring.

Marjolin's ulcer is a term used to describe squamous cell carcinomas which develop in chronic wounds. These carcinomas may also develop at the site of long-standing irritation, such as unstable burn scars. Development times for burn scar carcinomas of more than 30 years have been noted. This evaluation describes the treatment of 10 patients with burn scar carcinomas who have been treated using wide excision and closure of the defect with skin grafts or flaps, plus regional lymph node dissection if required. Results indicate a mean carcinoma development time of 26 years. Local recurrence occurred in only one patient.

Adolescent↗
PubMed1998

The effect of coronary artery bypass surgery on brain perfusion.

UNLABELLED: Coronary artery bypass grafting (CABG) is one of the major treatment methods of coronary artery disease. CABG is an open-heart surgery that uses cardiopulmonary bypass (CPB). After CPB, it is well known that neurological and neuropsychological complications may occur. The purpose of this study was to evaluate brain perfusion patterns before and after CPB and to locate brain perfusion changes in patients with neurological and neuropsycological complications after CPB. METHODS: Twenty-five patients who underwent open-heart surgery (22 CABG, 3 valve replacement) and 5 patients (4 cholecystectomy, 1 periferic vascular surgery) as a control group were included in the study. The 99mTc-HMPAO injected dose was 925 MBq. Brain perfusion SPECT images were obtained 30-60 min postinjection using a dedicated triple-head brain SPECT camera. Imaging was performed 1 wk before and 4-6 wk after surgery. Technetium-99m-HMPAO brain SPECT slices were evaluated visually and semiquantitatively. RESULTS: None of the patients had severe neurologic complications. Neuropsychological deficits occurred in eight patients after CABG. Cognitive deterioration and depressive mood occurred in five patients. Disorientation, agitation and confusion periods were present in another two patients. Frontal hypoperfusion was found in these patients by visual and semiquantitative evaluations (p = 0.0277) and left parietal hypoperfusion was also present semiquantitatively (p = 0.0277). Visual hallucinations occurred in one patient. Computed tomography of these patients was normal. No perfusion abnormalities were observed in the patient with visual hallucinations and in patients without symptoms after open-heart surgery nor in the control group. Brain SPECT was repeated in two symptomatic patients 5 mo after CABG. Frontal hypoperfusion became normal, and these patients' symptoms disappeared. CONCLUSION: The results of this study indicate that regional cortical hypoperfusion may occur in patients with neuropsychological complications after CABG. Technetium-99m-HMPAO brain SPECT is a useful method to locate and determine brain perfusion changes after CABG.

Brain↗
PubMed1998

A case of Costello syndrome with endocrine features.

The case of a 21-year-old woman with findings consistent with Costello syndrome (CS) is reported. Most previously reported cases of CS were in young children. In addition to the classic features, the patient had endocrine disturbances including secondary amenorrhea, goiter, and adrenal insufficiency. This last abnormality may be the cause of the hypoglycemic episodes seen in CS. Osteoporosis and anemia were additional features. This case provides new information on the endocrine features and prognosis of CS.

Abnormalities, Multiple↗
PubMed1997

Submental artery island flap for reconstruction of the lower and mid face.

Ideal reconstruction of facial defects should be accomplished by like tissue. The submental artery island flap has the same characteristics as facial tissue, consisting of thin, pliable tissue with a perfect color match. The flap can be manipulated in different configurations employing skin, the platysma, the rim of the mandible, and the anterior belly of the digastric muscle to be utilized in the reconstruction of complex defects. The pedicle of the flap is quite reliable and enables a wide range of applicability. We have used this versatile flap successfully for various defects in 14 patients and our results are presented. Ten of the 14 flaps consisted of the skin and platysma, two flaps also included the anterior belly of the digastric muscle, one flap was elevated with the rim of the mandible, and one flap consisted of skin, the platysma, bone and muscle.

Adult↗
PubMed1997

Effects of the number of pedicles on perfusion and survival of venous flaps: an experimental study in rabbits.

Venous flaps are new tools for reconstructive surgery; however, the survival mechanisms of these flaps are not clearly known. This study compares the effects of the number of pedicles in venous flaps and studies the perfusion of these flaps. In the rabbit ear composite tissue venous flap model without the underlying bed and perivenous areolar tissue, three groups with a different number of pedicles were created. The groups consisted of single-pedicled, two-pedicled, and three-pedicled venous flaps. Radioactive tracer studies with technetium 99m were undertaken to assess inflow and drainage. The venous pressure in each pedicled vein and pressure gradients were also documented between the venous pedicles. All single-pedicled venous flaps became necrotic. The mean viable flap area was 40.5% for the two-pedicled venous flaps, 75.8% for the three-pedicled flaps, and 94.1% for the axial-pattern control flaps. Inflow and drainage of the radioactive substance in the three-pedicled venous flaps were better than the two-pedicled venous flaps, but the axial-pattern control flaps were superior to both. We conclude that although venous flaps are still not as reliable as conventional flaps, increasing the number of pedicles affected flap survival positively, and venous flap perfusion occurred due to pressure gradients between flap pedicles.

Animals↗
PubMed1997

Management of a large arteriovenous fistula in the face: a case of neurofibromatosis type 1.

Neurofibromatosis type 1 (von Recklinghausen's disease or peripheral neurofibromatosis) is of particular interest to the plastic surgeon, as it affects the skin. The majority of affected patients require operative procedures for cosmetic and functional reasons. Rarely, vascular lesions such as stenosis, rupture of an aneurysm, and fistula formation in neurofibromatosis type 1 can create some difficulties during operation without any symptoms before surgery. We report the management of a large occipitojugular fistula. This life-threatening fistula was located on the right side of the face of a 28-year-old patient who had been operated six times for the same neurofibromatous mass without any operative complications. During the operation for partial excision of the neurofibromatous mass, life-threatening, uncontrollable hemorrhage began and the operation was ended without excision. Postoperative angiography revealed an arteriovenous fistula between the occipital artery and jugular vein, and also total occlusion/agenesis in the postclinoid cisternal segment of the internal carotid artery. The fistula was obliterated with coil and histoacryl lipiodol mixture. After this procedure partial excision was performed without abnormal bleeding.

Adult↗