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R S Seigel

Publications and source records attributed to R S Seigel.

At least 19 recordsLinked to original sources
PubMed1995

Angiographic pattern change in fibromuscular dysplasia. A case report.

Fibromuscular dysplasia (FMD) is an angiopathy that commonly affects the renal arteries but may affect other medium to large arteries, including the carotid artery. It has a variety of angiography appearances, the most common of which is a string-of-beads pattern consisting of a segment of alternating stenoses and dilatations. This case documents that these patterns are not necessarily fixed. An initial angiogram in a patient with neurologic symptoms shows a string-of-beads pattern in the carotid artery. Later, this pattern is seen to convert to a smooth tubular form on follow-up arteriography. FMD may present angiographically as a dynamic process.

Carotid Artery, Internal↗
PubMed1988

Familial cavernous angiomas of the brain in an Hispanic family.

We found cavernous angiomas (CA) in 10 of 22 members of a large Hispanic family. The proband had seizures, and a CA was found at surgery. He and two sisters with seizures had normal angiograms, but CT or MRI showed lesions compatible with CA. Similar abnormalities were found in two cousins with seizures and 5 of 17 asymptomatic relatives studied. MRI proved to be more sensitive than CT for identifying CA. Hispanic families appear to have a predisposition for dominantly inherited CA of the brain.

Adult↗
PubMed1987

Dural ectasia as a cause of widening of the internal auditory canals in neurofibromatosis.

Patients with neurofibromatosis have an increased incidence of acoustic neuroma, which is often bilateral. We present three patients with neurofibromatosis and enlarged internal auditory canals secondary to dural ectasia, without associated acoustic neuromata. Air CT cisternography and Metrizamide CT cisternography was needed in differentiating dural ectasia from acoustic neuroma in two patients.

Adolescent↗
PubMed1985

Balloon catheter dilatation of focal intestinal strictures following necrotizing enterocolitis.

Dilatation with a balloon catheter was successfully employed for 9 focal intestinal strictures which occurred in 5 infants following necrotizing enterocolitis. Eight of the 9 strictures were located in defunctionalized colon distal to an enterostomy; no infant had clinical intestinal obstruction. Because the dilatation achieved distal patency, subsequent closure of the enterostomy was accomplished without a formal laparotomy. The balloon dilatation technique may be valuable in the management of focal strictures that are not causing clinical intestinal obstruction.

Catheterization↗
PubMed1984

Esophageal strictures in children: treatment by serial balloon catheter dilatation.

Grüntzig balloon catheters were used to dilate ten esophageal strictures in eight infants and children. Five infants who had anastomotic strictures following esophageal atresia repair gained complete resolution of their strictures, usually after one or two dilatations. Three older children who had strictures following esophageal re-operation or reconstruction required longer courses of dilatations to achieve consistent esophageal patency. The technique failed in two chronic strictures of two and one-half and nine years' duration. Balloon catheter dilatation, begun in the early postoperative period, is a safe, effective method for dilating esophageal strictures.

Angioplasty, Balloon↗
PubMed1983

CT-guided aspiration of a cysticercotic thalamic cyst.

Removal of either parenchymal or intraventricular cysts in neurocysticercosis has traditionally necessitated operative intervention with its concomitant morbidity and mortality (L. Stepien and J. Chorobski, Arch Neurol Psychiat Chicago 1949;61:499-527; L. Stepien, J. Neurosurg 1962;19:505-13). To our knowledge, percutaneous parenchymal cyst aspiration to reduce mass effect has not been previously reported. We describe a case of successful CT-guided percutaneous thalamic cyst puncture and aspiration to reduce both obstructive hydrocephalus and raised intracranial pressure.

Contrast Media↗
PubMed1982

Segmental renal artery emboli treated with low-dose intra-arterial streptokinase.

Herein we describe a sixty-one-year-old man with unilateral segmental renal artery emboli treated with renal intra-arterial streptokinase infusion. The initial infusion rate was 9,000 units/hr. which was decreased to 5,000 units/hr. over the next six hours. Periodic arteriography demonstrated progressive lysis and virtual complete resolution after fifty-two hours of infusion. Intravenous pyelogram (IVP) six weeks later showed almost complete return of functional compared with IVP obtained six years earlier. We have demonstrated successful clot lysis at an infusion rate of 5,000 units/hr., compared with reported rates of 25,000 units/hr. and without the frequently utilized initial large intravenous bolus. Such low-dose streptokinase infusion should, theoretically, limit the incidence of recognized dose-related complications and permit its use in clinical settings where higher dosages are contraindicated. Intra-arterial streptokinase therapy seems particularly suitable for the high surgical risk patient and in arterial lesions not amenable to surgery. The availability of this potentially efficacious therapy suggests that aggressive diagnostic studies be pursued early in patients suspected of having an acute renal arterial embolus.

Embolism↗
PubMed1982

Intraspinal, extradural ependymoma.

Extradural ependymoma is a rare tumor arising most commonly in the soft tissues of the presacral area, less commonly in the soft tissues of the sacrococcygeal region dorsal to the sacrum, and rarely in the extradural portion of the spinal canal. The differential diagnosis varies with the location, but the natural history of the tumor is the same. If the tumor is not completely excised at surgery, it may recur. Distant metastases have been reported. A case of an extradural ependymoma arising within the spinal canal is reported with myelographic and computed tomographic findings at diagnosis and after therapy.

Adult↗
PubMed1982

Potential complications in myelography: I. Technical considerations.

Scanning electron microscopy demonstrated starch powder contamination on the stylet tip from a spinal needle after it was lightly touched with nonwashed surgical gloves. A sterile solution of Pantopaque was injected through the spinal needle after the stylet was withdrawn and carried particulate contaminants to a 0.2 micrometer millipore filter. Using both scanning electron microscopy and energy dispersive x-ray analysis, particles of various sized (mostly 5-10 microns) and variable compositions, including starch, talc, and other elements, were identified. Also, glass particles from the Pantopaque vial and plastic particles from the plastic syringe and tubing used in drawing up the Pantopaque were seen. These observations indicate that strict attention to proper technique in myelography is essential in order to eliminate potential cerebrospinal fluid contamination.

Arachnoiditis↗
PubMed1981

Subclavian steal syndrome: is venous-phase angiography meaningful?

Three cases of subclavian steal syndrome are presented, with emphasis on the venous phase following aortic arch injection. Dense opacification of the jugular vein on the involved side was seen, rather than a progressive decrease. In addition, patterns of venous flow in the neck were variable. Venous-phase angiography did not correlate with symptoms.

Aged↗
PubMed1980

Computed tomography and angiography in ileal carcinoid tumor and retractile mesenteritis.

Computed tomography and angiography were performed in two patients with ileal carcinoid tumor and in one with retractile mesenteritis. In each instance, a low density right lower quadrant mass with small bowel displacement and thickened mesenteric neurovascular bundles was identified at CT. Superior mesenteric artery (SMA) angiography revealed contraction, kinking and irregularity of mesenteric branches in all cases, but specific histologic diagnosis was not established by angiography alone. Our preliminary experience suggests that SMA angiography may not always be necessary in the diagnosis of either carcinoid tumor or retractile mesenteritis.

Aged↗