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Biomedical subjects

M Barzilai

Publications and source records attributed to M Barzilai.

At least 19 recordsLinked to original sources
PubMed1997

Isocratic non-aqueous reversed-phase high-performance liquid chromatographic separation of capsanthin and capsorubin in red peppers (Capsicum annuum L.), paprika and oleoresin.

A simple, rapid high-performance liquid chromatography method has been devised in order to separate and quantify the xanthophylls capsorubin and capasanthin present in red pepper (Capsicum annuum L.) fruits and preparations made from them (paprika and oleoresin). A reversed-phase isocratic non-aqueous system allows the separation of xanthophylls within a few minutes, with detection at 450 nm, using methyl red as internal standard to locate the various carotenoids and xanthophylls found in plant extracts. The selection of extraction solvents, mild saponification conditions, and chromatographic features is evaluated and discussed. The method is proposed for rapid screening of large plant populations, plant selection, as well as for paprika products and oleoresin, and also for nutrition and quality control studies.

Azo Compounds↗
PubMed1997

Gallbladder polyps in children: a rare condition.

Although gallbladder polyps are well documented in adults, only three cases in children have been reported in the literature. We present two pediatric cases in which gallbladder polyps were detected by ultrasound, confirming this as the imaging method of choice in diagnosing gallbladder disease.

Child↗
PubMed1996

Renal cortical abscess in a gravid female: US and MRI documentation.

We report a case of renal cortical abscess in a gravid woman. The abscess was documented by US as well as by MRI. The development of a kidney abscess is extremely rare despite the fact that urinary tract infections are quite common during pregnancy. The limitations of the diagnostic work-up during pregnancy are emphasized.

Abscess↗
PubMed1996

A fibroepithelial urethral polyp protruding into the base of the bladder: sonographic diagnosis.

A case of congenital urethral polyp in a 10-month-old boy is presented. These rare congenital tumors can lead to urinary retention, hematuria, urinary tract infections, hydronephrosis and hydroureter. Traditionally the diagnosis was based either on voiding cystourethrography or cystoscopy. The sonographic features of these polyps have only been reported in a few cases in the past. This modality is not infrequently the imaging procedure of choice in the work-up of children with signs and symptoms related to the urinary system. In the case presented herein the polyp was demonstrated initially by sonography as a soft tissue mass arising at the base of the urinary bladder. The differential diagnosis of these lesions is presented.

Diagnosis, Differential↗
PubMed1996

[Sonographic imaging of Ascaris lumbricoides].

The round worm, Ascaris lumbricoides, is one of the largest of the parasites that infest the human bowel. The worms usually develop in the jejunum and can reach several thousand in number, causing bowel obstruction, volvulus, intussusception, appendicitis and even bowel perforation with penetration into the peritoneal cavity. They tend to invade the bile and pancreatic ducts and may cause acute cholecystitis and pancreatitis. Ascaris lumbricoides can be detected by sonography. This imaging modality can be helpful in diagnosing the presence of the worms and in evaluating response to treatment. We present an 18-month-old girl in whom bowel worms were detected by sonography.

Animals↗
PubMed1995

[Percutaneous drainage of splenic abscesses under ultrasound].

A splenic abscess is considered life-threatening. Traditionally the treatment of choice has been splenectomy, which has relatively high morbidity and mortality and results in increased susceptibility to infection. Percutaneous drainage can be an alternative treatment for splenic abscesses and might avoid splenectomy. 2 cases of splenic abscess are presented: 1 had typhoid fever and the other had had a left hemicolectomy. In both cases external aspiration was performed twice and a catheter was left in the drained cavity after the second aspiration. There was no clinical improvement in the patient with typhoid fever and splenectomy had to be performed. In the other drainage was followed by marked regression of symptoms. We suggest that percutaneous drainage can be safely used for splenic abscesses. Splenectomy should be reserved for those in whom drainage does not lead to improvement.

Abscess↗
PubMed1995

[Timing of ultrasound examination in the detection of neonatal hydronephrosis].

The diagnosis of fetal hydronephrosis requires that there be ultrasound follow-up during the neonatal period. In most cases the dilatation of the renal collecting system regresses and no further diagnostic work-up is needed. A persistently dilated collecting system might be the result of obstruction, in which case surgical intervention should be considered. The ultrasound examination is the key factor in deciding whether to proceed with invasive procedures (cystography, intravenous pyelography or renal isotopic scan) or to stop urological investigation. The case presented emphasizes the importance of the timing of the first ultrasonographic study after birth. Ultrasound examination performed within the first 48 hours can lead to false negative results.

Female↗
PubMed1995

[Intraoperative hepatic ultrasound, and surgical decision making].

Surgical resection of liver metastases might improve patient survival. Their number, location and relation to the intrahepatic blood vessels are of great importance in deciding whether to operate, the kind of operation (such as lobectomy, segmentectomy, wedge resection) and the surgical approach. Preoperative imaging modalities, including US, CT, MRI, isotope-scanning and sometimes portal angiography, are not sensitive enough to diagnose many liver lesions. Also, in many cases they do not give an absolute answer regarding the exact segmental location of the lesion and its relations to the major blood vessels. Intraoperative ultrasound is sensitive enough to detect most liver lesions, to locate them by liver segment, and to define their relationship to the hepatic vasculature.

Decision Making↗
PubMed1994

Case report: bilateral nasoalveolar cysts.

Nasoalveolar cysts are rare developmental cysts arising in the region of the upper lip, just below the ala nasi. We present a case where a woman was suspected of having a local abscess. The microscopic features of this abscess were consistent with nasoalveolar cysts.

Adult↗