[Meckel's diverticulum in a 17-year-old boy as a cause of intermittent chronic pain in the umbilical area and the development of sudden abdominal inflammation--case report]. / Meckeluv divertikl u 17letého chlapce jako prícina intermitentní chronické bolesti v okolí pupku se vznikem náhlé zánetlivé príhody brisní--kazuistika.

The authors present an account of a large Meckel's diverticulum in a 17-year-old boy as the cause of chronic intermittent pain in the umbilical area, rare at this age, with development of acute inflammatory abdomen. During an emergency operation resection of the diverticulum was performed with 10 cm of the adjacent ileum and anastomosis of the ileum end-to-end. The patient recovered after surgery per primam intentionem and is free from complaints. The authors draw attention to the difficult preoperative diagnosis of this disease as well as to possible contemporary diagnostic and therapeutic possibilities.

The use of tannin from chestnut (Castanea vesca).

After mimosa and quebracho extracts, chestnut extract is the third most important vegetable tannin used for leather production. It is produced only in Europe on the northern side of the Mediterranean sea. The extract is prepared by hot water extraction of the bark and timber, followed by spray-drying of the solution. Analysis shows that there are insignificant variations in extract quality between batches, so the extract can be used with modern automated leather production systems. The extract contains approximately 75 percent active tanning substances. The primary component is castalagin, along with smaller amounts of vescalagin, castalin, and vescalin. A castalagin-based pharmaceutical product is currently in use for prevention and treatment of diarrhea in pigs and cattle that is caused by changes in diet. The beneficial effect is due to prevention of water losses through mucous membranes. The castalagin may also form chelates with iron, which influences the reabsorption of the metal in the animal digestive tract.