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Biomedical subjects

A Aslan

Publications and source records attributed to A Aslan.

At least 19 recordsLinked to original sources
PubMed2003

A case of intestinal obstruction due to phytobezoar--an alternative surgical approach.

We report a 5-year-old patient with phytobezoar mimicking acute appendicitis preoperatively. During laparotomy, it was detected that terminal ileum was obstructed by several fragments of rubbery material. Bezoar was milked into the large bowel, and phytobezoar including tangerine residues was evacuated via appendix stump because of severe distended cecum, and high risk of the anastomotic leakage and intraperitoneal contamination following enterotomy of the inflamated and ischemic ileum. Postoperative course was uneventful. To date, such a procedure has not been described. We suggest that milking of vegetable fibers into the cecum and then emptying via appendix stump may be an alternative treatment of phytobezoar localizing in terminal ileum.

Appendectomy↗
PubMed2003

Detection of leptospiral antigens in kidney and liver of cattle.

This study was designed to investigate the presence of leptospiral antigens in kidney and liver of naturally infected cattle using an immunoperoxidase (IP) staining and Levaditi's staining methods. A total of 39 cattle suspected from leptospirosis were examined histologically and immunohistochemically for the presence of leptospiral antigens. The leptospiral antigens were detected in 16 out of 39 cases (seven kidneys, three livers, and six kidneys and livers) when IP staining method was used, whereas leptospiral antigens were detected in 6 out of 39 cases (four kidneys and two livers) when Levaditi's staining method was used. This study ascertained that IP staining was more sensitive method than Levaditi's staining method for demonstrating the presence of leptospirosis in cattle.

Animals↗
PubMed2001

Comprehensive microsurgical anatomy of the jugular foramen and review of terminology.

The microsurgical anatomy of the jugular foramen was studied in 12 formalin preserved cadavers (24 foramina) and 40 dry-skulls (80 foramina). The jugular foramen was exposed by microsurgical dissection with drilling from a superior to inferior direction. Observations regarding dural architecture of the jugular foramen and relationships between neurovascular structures passing through the foramen were noted in cadavers. Normal bony construction of the foramen and its variational anatomy were examined in dry-skull specimens. Using photographs and drawings, the anatomy of the jugular foramen is presented and related terminology is discussed in the light of a literature review.

Cadaver↗
PubMed2001

Injury to the lacrimal apparatus after endoscopic sinus surgery: surgical implications from active transport dacryocystography.

In order to evaluate the lacrimal drainage system injury after functional endoscopic sinus surgery, surgical records and postoperative active transport dacryocystography imaging of 31 patients were analyzed. Presence of the lacrimal bone dehiscence and no passage of the contrast material into the inferior meatus were noted as the signs of injury to the lacrimal canal on active transport dacryocystography. Bony dehiscence was detected in 53.2% of the operated sides but 20% of the nonoperated sides. No passage of the contrast material into the inferior meatus was observed in 14.9% of the operated sides. There were no cases of epiphora postoperatively. The lacrimal drainage system injury was more frequently observed on the left sides operated. We conclude that lacrimal drainage system injury might occur in various extents during functional endoscopic sinus surgery. However, it does not necessarily result in postoperative epiphora. Performing the middle meatal antrostomy in posteroinferior direction, and uncinectomy with backbiting forceps or a shaver might help in reducing the lacrimal injury. Active transport dacryocystography can be adopted as an alternative diagnostic tool in detection of the lacrimal injury.

Dacryocystorhinostomy↗
PubMed2001

Morphometric analysis of anatomical relationships of the facial nerve for mastoid surgery.

Surgical anatomical relationships of the facial nerve (FN) with several landmarks used in mastoid surgery were studied in temporal bone axial high resolution CT scans of 90 patients (180 ears). The shortest distances between the FN and external auditory canal (EAC), sigmoid sinus (SS), posterior fossa dural plate (PFD), and joint of the bony EAC with the lateral surface of the mastoid (M) were measured. These measurements were also analysed in respect of pneumatization and side differences. On average, it was found that FN-EAC was 2.9 mm, FN-SS was 10.5 mm, FN-PFD was 7.3 mm and FN-M was 15.3 mm. FN-EAC was found to be longer in poorly pneumatized bones whereas other distances were longer in pneumatized bones. FN-M was found to be longer on the right side.

Adolescent↗
PubMed2000

Radiological anatomy of the intratemporal course of facial nerve.

Preoperative evaluation of the facial nerve (FN) anatomy within the temporal bone by high-resolution computed tomography (HRCT) helps in minimizing surgical trauma to the nerve. In order to demonstrate the radiological correlation of the intratemporal FN, eight adult, formalin-preserved cadavers were studied by comparing the transaxial and coronal sections of HRCT with anatomic microdissection findings. It was possible to visualize all segments of the FN canal in its intratemporal course. The most difficult part of the FN to demonstrate was the pyramidal section. Anatomic microdissection findings were consistent with the HRCT images. It was concluded that adequate information on the FN anatomy could be obtained from standard HRCT scans.

Aged↗
PubMed2000

A radiologico-anatomical comparative study of the cochlear aqueduct.

AIM: A comparative radiologico-anatomical study of the cochlear aqueduct (CA) was performed. MATERIALS AND METHODS: Eight cadavers and 23 dry temporal bones were studied. High-resolution computed tomography (HRCT) was carried out on each cadaver before microdissection. Microdissection was carried out in a plane parallel to the HRCT sections. RESULTS: The CA was found to be located an average of 7 mm inferior to the internal acoustic meatus and at the superior edge of the jugular foramen. The external aperture of the CA was triangular in shape in 18 bones (78.3%). The petrosal fossa was located just inferior to the external aperture and housed the glossopharyngeal nerve, which had an incomplete bony canal in four bones (17.4%) and a complete bony canal in three bones (13%). It was possible to demonstrate the petrosal portion of the CA on both coronal and axial HRCT. The otic capsule segment of the CA was impossible to demonstrate on coronal sections. CONCLUSION: The CA cannot be visualized in only one section of the plane in HRCT. Both the otic capsule and petrosal segments can be demonstrated on axial HRCT.

Aged↗
PubMed2000

Chondrosarcoma of the nasal septum.

Chondrosarcoma of the nasal septum is a rather uncommon tumour. Therefore, only limited numbers of cases have been described in the literature. This paper reveals one more case observed at the ORL department of Dicle University. In the present case, by using a transnasal and transpalatal approach, total resection of the tumour was performed in conjunction with postoperative radiotherapy.

Adult↗
PubMed1999

Determination of trans-10-hydroxy-2-decenoic acid content in pure royal jelly and royal jelly products by column liquid chromatography.

In this research, several royal jellies and commercial products containing royal jelly were analysed for their trans-10-hydroxy-2-decenoic acid (10-HDA) content by using a column liquid chromatography technique. Ten samples claimed to be pure royal jelly, containing 10-HDA between 0.75 and 2.54%. Seven samples claimed to contain royal jelly as an ingredient which ranged from non-detectable to 0.054%. The technique was found to be rapid with high recovery.

Animals↗
PubMed1999

An uncommon association relating to cloacal maldevelopment: bladder agenesis, anorectal atresia, and absence of vulva, vagina, and uterus.

The authors report on a newborn girl with complex urogenital and hindgut abnormalities. Urogenital anomalies consisted of absence of vulva and vagina, uterine and urethral atresias, bladder agenesis with ectopic ureteric opening, and bilateral pelvic ectopic kidneys. In addition, the baby had anorectal atresia without fistula as a hindgut anomaly. Herein, clinical evaluation and embryological review are made to explain the concomitant occurrence of these rare malformations.

Abnormalities, Multiple↗
PubMed1999

Surgical exposure in translabyrinthine approaches--an anatomical study.

OBJECTIVE: Translabyrinthine approach (TLA) is a procedure of choice for the removal of vestibular schwannomas in cases of profound hearing loss. There is a lack of anatomic studies reviewing the surgical anatomy of the cerebellopontine angle (CPA) as seen in the classical and enlarged TLAs. METHODS: Seven formalin-preserved cadavers were dissected. Structures, visualized in the CPA through the TLA, were scored according to the degree of their exposure (1, structure not seen; 2, partial exposure; 3, full exposure). RESULTS: The acousticofacial bundle, anterior inferior cerebellar artery and flocculus had the highest scores in both types of surgery. However. the fifth, ninth, and tenth cranial nerves, prepontine cistern, pons, superior cerebellar artery, and posterior inferior cerebellar artery had higher scores, i.e. better exposure, in the enlarged TLA than in the classical TLA. CONCLUSION: These findings suggest that the enlarged TLA be preferred in cases of larger tumors extending to either jugular foramen or middle fossa whereas the indications of the classical TLA should be limited to vestibular neurectomy and removal of smaller tumors.

Brain Mapping↗
PubMed1999

The subarcuate canaliculus and its artery--a radioanatomical study.

The anatomy of the subarcuate canaliculus (SAC), subarcuate fossa (SAF) and subarcuate artery (SAA) was studied in 12 cadavers and 35 dry temporal bones. Each cadaver was scanned with high resolution CT (HRCT) prior to microdissection. The SAC was always found to be a single canal located between the two arcs of the anterior semicircular canal in both microdissections and HRCT scans and the internal acoustic meatus was observed to be located just inferior to the SAC. The SAC was on average of 9.2 mm in length and 1 mm in width. The SAF was situated at a distance of 4.2 mm from the internal acoustic meatus, 3.5 mm from the groove for the superior petrosal sinus, 6.7 mm from the opening of the vestibular canaliculus and 11.5 mm from the most superior part of the jugular foramen. The SAA was found to originate from the anterior inferior cerebellar artery in 9 cadavers and from the internal auditory artery in 3 cadavers. The SAA always emerged from the main artery outside the internal acoustic meatus. It ran through the SAC as a single artery. This study investigated CT correlated anatomical aspects of the subarcuate canaliculus and its artery which is claimed to be responsible for the blood supply of the mastoid antrum, facial canal and bony labyrinth.

Cadaver↗
PubMed1999

Prophylactic ranitidine in experimental fetal distress: acute phase effects on the fetal stomach.

Fetal distress (FD) adversely affects fetal gastric physiology and histology, increasing gastric acid secretion and disturbing gastric protective mechanism. Considering these findings, an experimental study was planned to test whether ranitidine prevents FD-related gastric physiological and histological changes during late gestational period. In this study, a rabbit model of FD was created by way of intermittent maternal aortic occlusion. In group 1 (SC), saline treated animals underwent control operation. In group 2 (SD), FD was created in saline treated animals. In group 3 (RC), ranitidine treated animals underwent control operation. In group 4 (RD), FD was created in ranitidine treated animals. Blood lactic acid levels of the fetuses were 2.3 +/- 1.0 mg/L in SC group and 4.7 +/- 1.8 mg/L in group SD (p < 0.01); 2.5 +/- 0.9 mg/L in group RC and 6.7 +/- 2.5 mg/L in group RD (p < 0.01). Fetal gastric acid secretion was 5.94 +/- 2.13 microEq/h in group SC and 8.26 +/- 2.24 microEq/h in group SD (p < 0.05); 6.63 +/- 2.3 microEq/h in group RC and 6.04 +/- 2.43 microEq/h in group RD (p < 0.05). Fetal gastric PGE2 level was 16.4 +/- 2.65 microg/g-wet weight in group SC and 7.62 +/- 1.86 microg/g-wet weight in group SD (p < 0.01); 15.6 +/- 2.61 microg/g-wet weight in group RC and 8.44 +/- 1.44 microg/g-wet weight in group RD (p < 0.01). In addition, histopathological examination showed normal gastric structure in groups SC and RC, but there were mild erosive and hemorrhagic changes in groups SD and RD. Because prophylactic ranitidine significantly decreased gastric acid secretion, but did not prevent harmful histopathologic effects in FD, it is suggested that gastric damage cannot be avoided by decreasing gastric acid secretion alone. However PGE2 analogs with or without H2 receptor blockers may have a potential role to prevent FD-related gastric damage.

Animals↗
PubMed1999

Congenital non-familial unilateral basaloid follicular hamartoma.

Basaloid follicular hamartoma is not a well-recognized clinical entity and has often been diagnosed as trichoepithelioma or basal cell carcinoma. It is a unique benign follicular tumour which comprises a variety of clinical manifestations. We present the case of a 24-year-old male with unilateral basaloid follicular hamartoma present at birth and later misdiagnosed as basal cell carcinoma. Histological features of basaloid follicular hamartoma are not always diagnostic and clinico-pathological correlation is particularly important to distinguish this benign hamartoma from other basaloid tumours including basal cell carcinoma. Continuous follow-up of our patient did not reveal any clinical or histological malignant transformation.

Adult↗
PubMed1998

Anatomic relationships between surgical landmarks in type b and type c infratemporal fossa approaches.

Anatomic relationships of the structures exposed in type B and C infratemporal fossa approaches were studied in 20 temporal bones. The intrapetrous carotid artery (ICA), cochlea (CH), eustachian tube (ET), foramen spinosum (FS), foramen ovale (FO) and anterior foramen lacerum (AFL) were exposed by drilling of the glenoid fossa and base of middle cranial fossa. The relationships of the ICA with the cochleariform process (CP), CH, ET, FS, FO and AFL were noted along with associated measurements. The CP was lodged at a mean distance of 9.2 mm from the ICA genu. The ET was found to intersect the ICA. The mean distance of the ICA to the CH was 1.6 mm. The carotid canal was dehiscent on its horizontal portion in 30% of the bones studied and on its vertical portion in 5%. The periarterial venous plexus was found in 70% of the bones. No obvious branch was observed emerging from the vertical portion of the ICA. The FS was found to be a canal having a mean length of 5.8 mm.

Adult↗
PubMed1998

The jugular foramen: a comparative radioanatomic study.

BACKGROUND: Advances in microsurgical techniques made possible the removal of advanced jugular foramen (JF) lesions, which once had been accepted as unoperable. However, successful surgery requires detailed knowledge of the JF anatomy. METHODS: Sixteen jugular foramina in eight formalin-preserved adult cadavers were scanned with axial and coronal high resolution computed tomography (HRCT) prior to dissection. After craniectomy and removal of brain tissue, the relationships of the neurovascular structures in the JF were determined by drilling the temporal bones from superior to inferior on planes parallel to the skull base. RESULTS: No bony partition of the JF was observed. A dural band consistently divided the JF into two parts. Anterior to it was the glossopharyngeal nerve (IX) while the vagus (X) and accessory (XI) nerves were located posteriorly. There was a notch in which the IX nerve entered the JF. It was also identified on the CT scans and defined as the glossopharyngeal recess. The IX nerve made a genu within the JF in all specimens. Then, it ran inferiorly through a bony canal in three specimens (18.75%), and through an incomplete bony canal in two (12.5%), which were also defined on the CT images. The inferior petrosal sinus ran through a sulcus anteromedial to the glossopharyngeal recess. The posterior meningeal artery was found to be located between the X and XI nerves within the JF. CONCLUSIONS: This study revealed a complex and highly variable pattern of the relationships of the neurovascular structures in the JF, and their HRCT images correlated well with the anatomic microdissections.

Aged↗
PubMed1998

Sucralfate for posttonsillectomy analgesia.

Pain is one of the most troublesome complications of tonsillectomy. The pain appears as throat pain, otalgia, or both, and continues until mucosal recovery on the tonsillar fossae is complete. Some surgical and hemostasis techniques may increase pain. Analgesics, antibiotics, steroids, and local and topical anesthetics are used to relieve posttonsillectomy pain, but none has the desired effectiveness. The pain reliever must not increase bleeding and must have minimal side effects. Sucralfate, a basic amino salt of sucrose octasulfate, binds to the matrix protein of a peptic ulcer and produces a protective barrier. Tonsillectomy leaves two large ulcerous wounds, and sucralfate may bind those wounds as it does peptic ulcers. In this controlled study, the efficacy of sucralfate on posttonsillectomy throat pain, otalgia, analgesic requirement, degree of strength, bleeding, body temperature, and mucosal recovery is investigated in 80 patients. Sucralfate is found to significantly reduce throat pain and analgesic requirement after surgery.

Adolescent↗