[Gastrointestinal anisakiasis. Seven cases in three months]. / Anisakiasis gastrointestinal. Siete casos en tres meses.

Human anisakiasis or anisakidosis is an unusual parasitation. During the autumn of 1996 seven patients came to our Hospital for such a condition. Five of these patients had the parasites in the gastroduodenal area (1 in the gastric body, 3 in the antrum and 1 in the duodenal bulb, this one with two parasites). Four out of the five patients consulted us for intense epigastric pain; only one developed a cutaneous rash. The fifth patient was diagnosed unexpectedly during an endoscopy appointment. Eosinophilia was detected in none. All the parasites were extracted endoscopically and identified as belonging to the Anisakis genera. Excepting for the patient with no complaint, the other four showed adhered larvas to mucosa. The two other patients were operated because of acute abdominal pain. At laparotomy an ileitis was seen and then resected. Under microscopic examination both ileon were found to be edematous and infiltrated by eosinophils. Anisakis larvae were observed in the submucosa of one of the removed intestines. The other patient was diagnosed after an immunologic study consisting of radioimmunoassay and Western Blot. Five of the seven patients (71%) acquired the parasites after consumption of anchovies with vinegar.

[The usefulness of hydrogastric ultrasonography in the detection of neoplastic lesions of the gastric wall]. / Utilidad de la ecografía hidrogástrica en la detección de lesiones neoformativas de la pared gástrica.

Forty patients endoscopically diagnosed of different gastric neoplastic lesions were explored by hydrogastric ultrasonography to evaluate the usefulness of this method in the detection of such lesions and to analyze the characteristics of the ultrasonographic images and their correlation with the anatomopathologic findings. The sensitivity of the detection of the lesions was 87.5% being close to 100% in those located in the antrum, showing the body and fundus more difficulties due to gas and the costal ribcage. A clear correlation was observed between the ultrasonographic images and the anatomographic findings. It was concluded that this may be a complementary technique to gastroscopy in the diagnosis of sumucosal lesions and extrinsic compressions of the gastric wall. The infiltration of the wall may be delimited in neoplastic lesions and thus may contribute to correct T stratification of the tumor, although this should be confirmed in further studies.

[Color duplex Doppler ultrasonography in the evaluation of the risk of esophageal varices bleeding in cirrhotic patients]. / Ultrasonografía Doppler dúplex color en la valoración del riesgo de sangrado por varices esofágicas en pacientes cirróticos.

The risk of variceal bleeding (VB) in patients with cirrhosis and esophageal varices may be determined by the portal pressure gradient. The value of Color Duplex Doppler Ultrasonography (CDDU) in the identification of patients at risk for variceal bleeding has been discussed in the literature. In patients with esophageal varices at risk for bleeding, CDDU did not detect patients who presented variceal bleeding during a mean follow-up of 7 months. However, patients with a low Congestion Index (< 0.05) and a mean upper portal vein velocity of > 9 were at lower risk for variceal bleeding. The Congestion Index was higher in patients with bleeding during the follow-up (0.09 vs. 0.057 (p = 0.03) and the mean portal vein velocity was lower in these patients (10.7 vs. 14).