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Biomedical subjects

A Vade

Publications and source records attributed to A Vade.

At least 37 records · Page 2Linked to original sources
PubMed1993

Magnetic resonance imaging of abdominal masses in children.

Seventeen children with abdominal masses (16 solid and 1 complex cystic) were evaluated by magnetic resonance imaging (MRI). Computed tomography (CT) was also performed in 12 cases. MRI findings were correlated with CT and histopathologic findings. In 10 cases MRI provided more specific diagnostic information than CT. In 2 cases MRI did not provide any significant additional information. In 5 cases, MRI provided enough specific information alone that CT was not deemed necessary prior to clinical management. We conclude from our experience that MRI should be the modality of choice in the further evaluation of noncystic masses after initial sonography. MRI manifestations play a major role in establishing the nature and source of abdominal masses which directly affect their clinical management. Compared with CT, MRI was better in localizing and determining the extent of lesion in its primary and secondary sites, without the need for iodinated contrast injection.

Abdominal Neoplasms↗
PubMed1993

Renal resistive indices in children.

We established renal vascular RIs in 177 normal kidneys in children. Age dependency of RIs was noted in children with normal kidneys. As compared to adults, renal RIs were found to be normally higher in children up to 10 years.

Adolescent↗
PubMed1992

MRI of aggressive bone lesions of childhood.

MRI can yield valuable information about involvement of bone and soft tissue by aggressive bone lesions of childhood. The 18 lesions evaluated with MRI included osteosarcoma, Ewing's sarcoma, histiocytosis, osteomyelitis, osteoblastoma, giant cell tumor, aneurysmal bone cyst, ossifying fibroma, and fibrous dysplasia. In 12 children, where CT correlation was available, MRI provided equal or more information than CT. Our study shows that MRI should be the modality of choice in the evaluation of aggressive bone lesions of childhood, after conventional radiography.

Adolescent↗
PubMed1990

Radiographic features of bone lengthening procedures.

The successful treatment of leg length discrepancy depends not only on an accurate assessment of the pattern of growth of the femur and tibia but also on thorough understanding of the various treatment methods. The radiographic features of 43 leg lengthening surgeries were studied retrospectively, and their significance in the treatment of children with leg length discrepancies was evaluated. The morbidities seen in our study include leg deformities resulting from misalignment of bone segments and excessive stretching of soft tissues, and fractures, nonunions, and delayed unions at the lengthened sites, leading to prolonged application of traction devices. The overall frequency of morbidity was 148.8%. In the orthopedic literature, morbidity rates vary with the underlying reasons for leg length discrepancy, the type of bone lengthening procedure, and the type of complications included. Timely detection of radiographic abnormalities in the lengthened leg can contribute significantly to the successful treatment of leg length discrepancy.

Adolescent↗
PubMed1989

Posterior mediastinal teratoma involving the esophagus.

Intrathoracic teratomas are difficult to diagnose on chest radiographs if they are noncalcified and located in an atypical site. We report an unusual case of posterior mediastinal teratoma that involved the esophageal wall. Features noted on computed tomography (CT) of the chest and barium examination of the esophagus are herein presented.

Diagnosis, Differential↗
PubMed1989

Computerized tomography in occlusive infantile arteriopathy.

Use of computerized tomography (CT) in the diagnosis of arterial calcification of infancy, including coronary obstructive disease, has not been previously reported. We were able to demonstrate by CT scan the abnormal arteries present in this disease. The calcified arteries in this infant, who died of bowel infarction at three weeks of age, were easily delineated in CT scans of the chest, abdomen, and extremities. Autopsy sections revealed intact elastic fibers in the abnormal arteries, indicating that the basic pathologic process does not primarily involve these fibers.

Angiography↗
PubMed1989

The anorectal sphincter after rectal pull-through surgery for anorectal anomalies: MRI evaluation.

The puborectalis muscle sling was evaluated with MRI in 10 pediatric patients who had rectal pull-through surgery for anorectal anomalies. MRI (1.5T) demonstrated the puborectalis muscle equally or better than CT in 5 patients who had both CT and MRI. The amount of puborectalis muscle mass and the location of the pulled-through intestine in relation to the puborectalis sling was well shown with MRI. Our study suggests that MRI can be reliably substituted for CT in the majority of these patients, to assist in planning further surgery for relief of persistent postoperative fecal incontinence.

Anal Canal↗
PubMed1987

Sonographic renal parameters as related to age.

Four hundred and fifty-four kidneys were evaluated by real time ultrasound for appearance of renal cortical echogenecity, medullary pyramids and central sinus echoes. These renal parameters were correlated with age in 227 patients ranging in age from 0-15 years. The renal parenchymal echogenicity was observed to change not abruptly at a certain age but gradually over a period of years.

Adolescent↗
PubMed1987

Orbital rhabdomyosarcoma in childhood.

Rhabdomyosarcoma is a diagnostic and therapeutic problem in the management of pediatric tumors, representing the most common malignant orbital tumor of childhood. In this discussion of the diagnosis of rhabdomyosarcoma, the role of CT is detailed through the case reports and the radiographs presented. CT can accurately define the anatomic location of the orbital mass, the involvement of various intraorbital structures, and the extension of the pathologic process into the periorbital regions such as sinuses, nasal cavity, and intracranial compartment. Thin-needle aspiration biopsies can be done under CT guidance without complications as well as follow-up monitoring of tumor regression following therapy.

Adult↗
PubMed1986

Hemorrhage in cavum septi pellucidi.

One case of hemorrhage in the cavum septi pellucidi (CSP) is presented. This unusual location of intracranial hemorrhage was demonstrated by cranial sonography in a premature neonate.

Cerebral Hemorrhage↗
PubMed1985

Imaging of Burkitt lymphoma in pediatric patients.

The imaging procedures utilized at presentation in the diagnostic work-up of 19 children with Burkitt lymphoma were reviewed. The distribution of disease was compared to other tumors of childhood so that the most valuable modalities could be identified. Burkitt lymphoma is a rapidly growing tumor in the child, making it essential to suggest the diagnosis as quickly as possible so that biopsy and treatment can be instigated. The primary area of involvement was abdominal (15 of 19), gastrointestinal, intraperitoneal adenopathy, hepatic and pancreatic without retroperitoneal adenopathy. Pleural effusions were common without hilar and mediastinal adenopathy. This is in contrast to other tumors of childhood where mediastinal and hilar disease in the chest and retroperitoneal node involvement in the abdomen are common. Thus sonography is an excellent imaging modality, easily identifying the extent of the disease and so suggesting the diagnosis.

Abdominal Neoplasms↗
PubMed1983

Radiologic evaluation of gastrostomy complications.

Radiologic examination plays a crucial role in the evaluation of suspected gastrostomy complications. This has not been stressed adequately in the radiologic literature. In a retrospective review of 230 patients who underwent tube gastrostomy for varied clinical conditions, 70 patients who had radiologic examination for evaluation of gastrostomy-related complications were identified. Thirty complications were diagnosed radiologically. There were 11 gastric obstructions, 11 tube displacements, four gastric ulcers, two gastric perforations, one leaking gastrostomy, and one broken gastrostomy tube. Gastric torsion and gastric pneumatosis are reported for the first time as complications of gastrostomy.

Adolescent↗
PubMed1983

Uroradiologic manifestations of portal hypertension.

In a retrospective review of 50 patients with known portal hypertension, uroradiologic abnormalities directly related to this entity were detected in 10 patients (20%). Unusual findings in three patients are stressed. One case of ileal conduit hemorrhage due to enterostomal varices secondary to portal hypertension, in which the imaging studies were noncontributory, is included in this discussion because of its important clinical and diagnostic implications.

Adolescent↗
PubMed1982

Effects of pregnancy on sarcoidosis.

The effects of pregnancy in patients with sarcoidosis is reviewed in 18 patients. During 35 pregnancies, no clinical or roentgenographic effect upon the disease process was noted in nine patients. Six of these patients demonstrated an improvement, and in three patients, a deleterious effect was noted. A relapse of the disease was not noted after delivery in 15 of the patients. In three patients, a progression of the disease continued after delivery.

Adult↗
PubMedDate not supplied

Thymopharyngeal duct cyst: MR imaging of a third branchial arch anomaly in a neonate.

Third branchial arch anomalies are rare. The authors present a case report of a neonate with a rapidly growing neck mass due to cystic dilation of a persistent thymopharyngeal duct, which is a derivative of the third branchial arch. The presence of thyroid and thymic tissue in the cyst wall, the communication of the cyst with the piriform sinus, and the relationship of the cyst to carotid vessels and the sternomastoid muscle were consistent with the features of a thymopharyngeal duct cyst embedded in the thyroid gland.

Branchial Region↗
PubMedDate not supplied

Agenesis of corpus callosum and intraventricular lipomas.

Intracranial lipomas are rare and usually do not have clinical expression. They are located most commonly in the interhemispheric fissure and may also be found in the quadrigeminal, ambient, chiasmatic, interpeduncular, sylvian, and perimesencephalic cisterns. Interhemispheric lipomas may be associated with choroid plexus lipomas. The ultrasonography, computed tomography, and magnetic resonance imaging findings are reported in a neonate with lateral ventricular choroid plexus lipomas and interhemispheric lipoma associated with agenesis of the corpus callosum.

Agenesis of Corpus Callosum↗