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At least 235 records · Page 13Linked to original sources
PubMed2002

Pyogenic granuloma subsequent to apical fenestration of a primary tooth.

BACKGROUND: The authors present two case reports of patients exhibiting pyogenic granulomas in the maxillary labial mucosa, which were related to an apical fenestration of a primary incisor. CASE DESCRIPTIONS: Several researchers have reported that the gingival wound and surrounding inflammatory tissue typically heal spontaneously after extraction of a fenestrated primary tooth. However, in the cases presented here, the gingival lesion did not heal after the fenestrated teeth were extracted. CLINICAL IMPLICATIONS: After extracting fenestrated teeth, clinicians need to examine the labial area at a follow-up appointment to ensure that the gingival hyperplasia heals properly. The authors suggest performing curettage of the surrounding abnormal tissue at the time of the tooth extraction.

Child↗
PubMed2002

Fontan operation and the cavopulmonary technique: immediate and late results according to the presence of atrial fenestration.

OBJECTIVE: To compare immediate and late results in patients with or without fenestration who underwent cavopulmonary anastomosis so that we could assess the efficiency of the technique. METHODS: Sixty-two patients underwent surgery between 1988 and 1999, 41 with fenestration (group I -G I) and 21 without fenestration (group II -G II). Tricuspid atresia was prevalent in group I (23-56%) and single ventricle was prevalent in group II (14-66%). Mean ages at the time of operation were 7.3 years in group I and 7.6 in group II. At late follow-up, mean ages were 10.6 years in group I and 12.8 years in group II. RESULTS: Immediate and late mortality were 7.3% in G-I and 4.7% in G-II. Significant pleural effusion occurred in 41.4% of G-I patients and in 23.8% of G-II patients. Significant pericardial effusion occurred in 29.2% and 14.2%, respectively, in groups I and II. Central venous pressure was greater in G-II, 17.7 cm in H2O, as opposed to 15 cm in G-I. Hospital stay was similar between the groups, 26.3 and 21.8 days, respectively. Cyanosis and arterial insaturation occurred in 5 patients, and 4 patients were in functional class II, all from G-I. At late follow-up, 58 (93.5%) were in functional class I. Sinus rhythm was present in 94%, and pulmonary perfusion was similar in both groups. Eleven patients who underwent spirometry had good tolerance to physical effort. CONCLUSION: Atrial fenestration did not improve the immediate or late follow-up of patients who underwent cavopulmonary anastomosis, and is, therefore, dispensable.

Child↗
PubMed2003

Aneurysm and fenestration of the azygos anterior cerebral artery--case report.

A 78-year-old female suffered sudden onset of nausea and headache. Computed tomography demonstrated diffuse subarachnoid hemorrhage. Cerebral angiography demonstrated an aneurysm arising from the right A1 segment of the azygos anterior cerebral artery, and the hypoplastic left A1. A right frontotemporal craniotomy was performed to obliterate the aneurysm by neck clipping. Surgical exploration found the fenestration of the right A1 and showed that the aneurysm had originated from the bifurcation of the fenestrated A1 and a small perforating artery arising from the fenestration. This unusual combination of an aneurysm associated with a fenestration of the right A1 and contralateral A1 hypoplasia may have been caused by local hemodynamic stress.

Aged↗
PubMed2006

Endovascular treatment of ruptured aneurysms associated with fenestrated basilar artery. Two case reports.

Two patients with ruptured aneurysm associated with fenestrated basilar artery (BA) were treated using the endovascular approach. Angiography showed these patients had different types of BA bifurcation. One type had two points of bifurcation and a bridging artery in the BA fenestration, with the aneurysm at the bifurcation of the right loop of the fenestration. The aneurysm had different appearances on right and left vertebral angiograms. The other type had only one point of bifurcation, and the appearance of this aneurysm was similar on both angiograms. To ensure successful embolization, bilateral vertebral angiography should be performed for complete assessment of the morphological characteristics of aneurysm associated with fenestrated BA.

Adult↗
PubMed2001

Fenestrated epithelium of the pelvic recess wall on the lateral parenchymal tissue in the dog kidney.

The epithelium of the pelvic recess separating the urine and the lateral parenchym of the dog kidney was examined by scanning and transmission electron microscopy (SEM and TEM) to try and identify the epithelial structures permitting filtration of urine substances. In cross sections through of the renal hilus, recesses were found in the pelvic space extending along the internal surface of the lateral parenchym. Light microscopy (LM) showed the external wall of the recess facing the parenchymal tissue to be a thin squamous epithelium underlined with a layer of smooth muscle cells. The cytoplasm of epithelial cells observed by TEM was extremely thin in comparison to the epithelia on other parts of the pelvic wall. Their peripheral cytoplasm usually demonstrated interdigitations or showed overlapping of cytoplasm of neighboring cells in two or three laminae. Distinct junctional structures were observed but no distension of the intercellular space was seen. The lumenal cell surface was relatively smooth, but the peripheral cytoplasm was equipped with either angular or stumped processes and deep cavae. In addition to a small number of cell organellae, numerous vesicles and vacuoles of varying sizes were conspicuously observed. The vacuoles contained flucculent materials and were fenestrated by pores closed by a diaphragm at fused potions of their limiting membrane with the adluminal and abluminal plasma membrane. The openings of the vacuoles were also seen at the basal cytoplasm. Similar fenestrations also occurred between the neighboring vacuoles in chains or conglomerations. Attenuated epithelial cytoplasm in close association with urinary tubules was also fenestrated by uniformly sized pores closed by thin diaphragm with punctuate central thickening. The fenestrations through the cytoplasm and between the chained vacuoles may thus be structures which have yet to be previously identified, and this finding seems to indicate that the filtration of urine substances occurs across the epithelial lining of the pelvic wall. Layers of thin smooth muscle cells with mutual connections are seen to underline the epithelium. The innermost muscle cells penetrated the basal lamina and thus come in contact with epithelial cells. However, their significance could not be clearly determined.

Animals↗
PubMed1986

Ovarian cyst fenestration via the laparoscope. A laparoscopic method for treatment of non-neoplastic ovarian cysts.

A laparoscopic method of managing macroscopically benign, unilateral, unilocular, mobile, translucent, and smooth-walled ovarian cysts in women of reproductive age is described. The method requires the cutting of a window in the cyst wall through the laparoscope fenestration. In preference to aspiration at laparoscopy or removal at laparotomy, this method has the advantage of ensuring histologic material as well as permanent drainage by the use of atraumatic surgical technique. Nineteen cysts were fenestrated laparoscopically. Four cysts could not be classified, two owing to lack of histologic material, two owing to malpreparation of the selected cyst tissue. In one case an epithelial cyst--a mucinous cystadenoma, being laparoscopically unsuspected--was fenestrated. One cyst recurred. By observing the above criteria it is possible and tolerably safe to select non-neoplastic cysts, for which fenestration should be reserved.

Adult↗
PubMed1993

Supraclinoid internal carotid artery fenestration with an associated aneurysm. Case report.

The case of an aneurysm occurring at the site of fenestration of the supraclinoid portion of the left internal carotid artery (ICA) is reported. A 37-year-old woman presenting with subarachnoid hemorrhage was found to have bilateral ICA aneurysms at the level of the posterior communicating arteries (PCoA's). The patient underwent right-sided craniotomy with uneventful clipping of the right PCoA aneurysm, and attempted clip placement on the contralateral left ICA aneurysm. The follow-up angiogram revealed a residual dome on the left ICA aneurysm, which was noted to originate at the proximal end of a fenestration of the left supraclinoid ICA. This represents the third reported case of fenestration of the intracranial ICA associated with an aneurysm. Intracranial artery fenestrations and their embryological origins are also reviewed.

Adult↗
PubMed1999

[Ischemic complications in aortic dissection--percutaneous treatment with balloon fenestration and stent implantation].

PURPOSE: To describe principles and results of percutaneous treatment of ischemic complications of aortic dissection. MATERIALS AND METHODS: In five cases (four patients) aortic dissection was clinically complicated by renal (n = 4), iliofemoral (n = 2) or mesenterial ischemia (n = 1). After evaluation by means of computed tomography, angiography, and manometry, treatment consisted of balloon fenestration of the intimal flap, stent placement or both. RESULTS: Eleven of 25 vascular beds were classified as ischemic. Treatment consisted of 11 balloon fenestration procedures in 3 patients, in one case supported by stent placement across the dissection membrane. Stents were placed in five renal arteries, one stent was placed in the true lumen of the aorta. One iliac artery was treated with balloon dilatation. One renal artery dissection became symptomatic after balloon fenestration and was treated successfully by stent placement. In all cases ischemia was resolved by endovascular treatment. All patients had persistent relief of symptoms. Mean follow-up time is 5.8 months. CONCLUSION: Ischemic complications of aortic dissection can be effectively and safely treated with stent placement and balloon fenestration.

Adult↗
PubMed1975

Fenestrated palatal mucosal grafts for vestibuloplasty.

Vestibuloplasties with fenestrated palatal mucosal grafts were successful in eight patients. The fenestrated palatal mucosa provides a tough, full-thickness, resilient mucosal graft from a limited donor site. The operating time is decreased, bleeding is minimized, and healing time of the donor site is shortened. Fenestration allows seepage of blood and tissue fluids from beneath the graft. The fenestrated grafts are readily adaptable to any irregularities of the edentulous mandibular ridge.

Gingiva↗
PubMed2002

Macroglial alterations after isolated optic nerve sheath fenestration in rabbit.

PURPOSE: To study the modifications undergone by the macroglial cells after meningeal breach of the optic nerve in the rabbit, without optic neuropathy. METHODS: The optic nerve sheath fenestration technique carried out in humans was adapted to rabbit without axonal injury in the optic nerve. The effects of meningeal fenestration on glial cells were examined by immunocytochemical procedures (day 15) using the antibodies against two astrocyte markers: glial fibrillary acidic protein (GFAP) and vimentin. Proliferation of glial cells was evaluated with single 5-bromodeoxyuridine (BrdU) labeling or double GFAP and BrdU labelings. Qualitative data on glial cells were evaluated with the electron microscope. RESULTS: Optic nerve sheath fenestration on healthy adult rabbits resulted in a decrease of volume of the subarachnoid space located at the level of the meningeal scar, with a significant increase of the optic nerve area. The meninges presented a fibrous scar. In the optic nerve parenchyma, astrocytes appeared hypertrophic in the vicinity of the fenestration. The whole nerve contains numerous BrdU-labeled mitotic cells, a number of which double-labeled for both BrdU and GFAP belong to the astrocyte line. There was no loss of optic nerve axons. CONCLUSIONS: The inflammation produced by the surgical breach of the peri-optic meningeal sheaths induces a significant reactivity, including proliferation of astrocytes in the optic nerve. Reactive astrocytes may interact positively with axons and may modify the extracellular environment in the optic nerve.

Animals↗
PubMed2002

Saccular aneurysm associated with posterior cerebral artery fenestration manifesting as a subarachnoid hemorrhage in a child.

Fenestrations of the cerebral arteries are uncommon, and aneurysms in association with fenestrations are even more uncommon. We report the case of a saccular aneurysm associated with a posterior cerebral artery fenestration in a child with subarachnoid hemorrhage. The patient was successfully treated with Guglielmi detachable coils. This case is unusual because of the patient's age and the location of the fenestration.

Cerebral Angiography↗
PubMed2002

[Treatment of intracranial cysts in children: peritoneal derivation or endoscopic fenestration?].

OBJECTIVE: The goal of this study is to evaluate the indications, benefit and complications of shunts and endoscopic fenestrations in the treatment of malformative intracranial cysts. MATERIAL AND METHOD: The records of 172 consecutive children (mean age of 4 years) were reviewed. All had a malformative cyst. Dandy Walker malformation, mega cisterna magna, and cysts from tumoral or porencephalic origin were excluded from the study. The cysts were diagnosed either in utero (n=64) or postnatally (n=108). Most of them were unique (94.8%) and localized in the posterior fossa (26.2%) or at the convexity (23.2%). Indication for surgery was based on clinical symptoms (n=101; 86.3%) or size of the lesion (n=16; 13.7%). Endoscopy was the treatment of choice when cysts were in closed relationship with enlarged ventricles. Shunting procedures were indicated when endoscopy was not feasible and craniotomies when shunt insertion was unsafe or diagnosis uncertain. Fifty children underwent an endoscopic fenestration, 55 a shunting procedure, 7 the puncture or the external drainage of a pericerebral collection and 5 a direct surgical approach. The mean follow-up was 5.5 years. Psycho-motor, intellectual and school performances were evaluated in 93 children (54%). Success was defined by both the disappearance of symptoms of increased intra cranial pressure and regression of the cyst. RESULTS: Compared to shunts, endoscopic fenestrations were more frequently successful (70% vs 61.8%), led to less complications (6% vs 61.8%) and to a lesser number of reoperations (in average 1.6 operation per child vs 2.2). Median developmental and intellectual quotients for the whole series were respectively 98 and 97 and did not depend upon the type of treatment. CONCLUSION: The study of this series shows that treatment modalities necessarily vary according to the site of the cysts but that endoscopic fenestrations are preferable to shunts whenever feasible.

Brain Diseases↗
PubMedDate not supplied

[Dehiscence and fenestration: study of distribution and incidence in a homogeneous population model].

Ninety crania of Italian and Austrian males, 25-32 years old, coming from the ossurary of Custoza have been examined, (in all 2205 teeth) to determinate the presence and the frequency of dehiscences and fenestrations. All the crania presenting signs of serious stomatologic pathology have been rejected. Dehiscences are more frequent than fenestrations (7.30% vs 6.98%); dehiscences are more frequent in the mandible than in the maxilla (11.55% vs 1.86%), while fenestrations are more frequent in the upper alveolar arch than in the lower one (13.23% vs 2.10%); the upper right first molar is resulted to be the tooth showing the greatest number of defects (8.13% dehiscences and 49.69% fenestrations).

Alveolar Process↗
PubMed1985

[Fenestration of the internal carotid artery in the neck].

Fenestration or duplication of the internal carotid artery is extremely rare. A review of the literature revealed only two such cases by angiography. We present two further cases of internal carotid artery fenestration, incidentally disclosed by angiography. The embryological basis and the clinical significance of this anomalous condition were discussed. Case 1. A 47-year-old woman was admitted to hospital on May 13, 1982, after the first attack of subarachnoid hemorrhage. Four-vessel angiography showed a saccular aneurysm arising at the trifurcation of the right middle cerebral artery. In addition, a fenestration of the right internal carotid artery was demonstrated at the level of the atlas: the cervical portion of the vessel distal to the level of C-2 was markedly elongated and dilated in caliber. Moreover, the right external carotid artery occupied a dorso-lateral position relative to the internal carotid artery. Case 2. A 51-year-old man was admitted to hospital on April 20, 1983, for evaluation of grand mal seizures. CT scans and four-vessel angiograms showed a malignant glioma of the right temporal lobe. Additionally, a fenestration of the right internal carotid artery was identified at the level of the atlantoaxial joint, and the vessel was dilated in caliber at the level of C-1 to C-2.

Brain Neoplasms↗
PubMed1979

[A quantitative ultrastructural analysis of fenestrations and basal laminae of the blood capillaries in the knee joint synovial membrane (author's transl)].

Studies were carried out on the materials comprising the knee joint synovial membrane, kidney and lung from 13 young dogs and the knee joint synovial membrane obtained surgically from a 16-year old boy. The number of endothelial fenestrations of the blood capillary in the synovial membrane was 330 per 100 mu2 of the fenestrated vascular bed in 3--4 day-old dogs, 938 in 1 month-old dogs, 570 in 2 month-old dogs and 530 in the boy. The conspicuous peak in the development of vascular endothelial fenestrations seen in the synovial membrane of the dogs at 1 month of postnatal age appears to reflect a rapid increase in the mechanical load for the knee joint about 1 month after birth. A similar peak was absent for the blood capillaries in the renal glomeruli where the endothelial fenestrations continued to increase for the first 2 months of the postnatal period in dogs. The basal laminae of blood capillaries in the synovial membrane were often observed to be multi-layered, and this was remarkable especially in the human material. However, the thickness of the laminae of blood capillaries in the synovial membrane, as well as in the renal glomeruli and the lungs, showed a gradual increase with advance of the postnatal age of puppies up to 2 months.

Adolescent↗
PubMed1977

[A case of multiple anomalies of cerebral vessels--fenestration of the middle cerebral artery aneurysm of the anterior communicating artery and arteriovenous malformation on the frontopolar region (author's transl)].

A case associated with multiple cerebral vascular anomalies, which consisted of fenestration of the middle cerebral artery, arteriovenous malformation and aneurysm of the anterior communicating artery, was reported. A 48 year-old male has been suffering from the left paralysis and mental disorder after the initial attack of subarachnoid hemorrhage, and the second attack resulted in the deterioration of the symptoms. He was admitted to our clinic on October 28, 1974. On neurological examination, mental disorders, such as disorientation, emotional incontinence, amnesia and acalculia, hemiplegia on the left and meningeal irritation signs were observed in admission period. Physical examination was negative. Cerebral angiographic findings were as follows: 1) Moderate vasospasm of the right internal carotid artery at the terminal segment, mild bowing of the anterior cerebral artery and stretching of the frontparietal opercular branches of the middle cerebral artery were observed. 2) Right frontpolar arteriovenous malformation fed by the frontobasal artery and the frontopolar artery, and drained via the aberrant cortical vein into the superior sagittal sinus. 3) Aneurysm of the anterior communicating artery was opacified by left carotid angiography. 4) An abnormal vessel derived from the terminal segment of the right internal carotid artery and terminated at the portion of the sphenoidal segment of the middle cerebral artery. Complete loop was formed between genuine middle cerebral artery and this abnormal artery. He was operated with dissecting microscope on November 11, 1974. The arteriovenous malformation at right frontopolar region was totally removed and aneurysm of the anterior communicating artery was clipped. According to the operative findings, the arachnoid membrane over the right frontopolar region was turbid and adhered to the adjacent tissues. On the contrary, no abnormal findings suggestive of previous subarachnoid hemorrhage were observed around the region of the anterior communicating artery aneurysm. These findings showed that subarachnoidal bleeding was caused by rupture of the arteriovenous malformation of right frontopolar region, but not by the aneurysm on the anterior communicating artery. The postoperative course was uneventful and during the hospitalization the patient starts on rehabilitation therapy. The authors discussed the genesis of fenestration of the middle cerebral artery and relation among these combined vascular anomalies. We inferred that fenestration of the middle cerebral artery arose from the in complete fusion of procursor vascular network in embryonic stage. Additionally, we emphasized that it was necessary to make a distinction between these two terms "fenestration" and "duplication".

Cerebral Angiography↗
PubMed1983

[Fenestration of the pulmonary septa as a sign of early destruction in emphysema].

Fenestrations of alveolar septa were found in 8 patients from a group of 9 in samples of macroscopically normal tissue from resected lobes or the whole lungs. Number and diameter of fenestrations related to the length of septa were in correlation with the severity of obstruction examined before operation. Most fenestrations were empty, less often were filled by pneumocytes 2, once by pneumocyte 1. Small fenestrations occurred in intercapillary parts of septa. Junctional complexes between pneumocyte 1 processes were found in margins of fenestrae. When destruction exceeded intercapillary parts of septa capillary circulation was damaged.

Adult↗
PubMed1994

[Treatment of generalized peritonitis with fenestration of the abdominal cavity].

The authors suggest a new method for the treatment of generalized peritonitis. It is based on the use of a device of the authors' construction which allows the condition of the abdominal cavity to be visualized continuously and the cavity to be cleansed regularly with the aid of laparoscope. The method is called fenestration of the abdominal cavity. The authors had 395 patients with purulent peritonitis, 171 (43.3%) of them were treated by the semiopen method, 41 of these patients (10.4%) were subjected to fenestration of the abdominal cavity. The authors consider fenestration indicated in generalized peritonitis with signs of polyorganic insufficiency in the presence of a large amount of exudate and concurrent interintestinal, subdiaphragmatic, and pelvic abscesses or when there is a tendency towards their development. With the use of the device for fenestration the number of cleansing relaparotomies was reduced to minimum. Relaparotomy was conducted once in 35, twice in 4, and three times in 2 patients. In all patients the abdominal cavity was examined daily with a laparoscope, the exudate was aspired, and antibiotics were introduced. Phlegmon of the anterior abdominal wall was in early postoperative complication in 2 patients. Five (12.2%) patients died.

Adolescent↗