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Primary malignant tumors of the small intestine are a rare finding, not thought to be a likely case of intestinal obstruction. A case is reported of a patient presenting with chronic abdominal pain, apparently due to adhesions and a postoperative hernia (already after its repair). On laparotomy two tumors of the small, intestine were found obstructing its lumen, diagnosed histopathologically as primary malignant lymphoma.

The authors report a case of 47 years old male who was treated for 1,5 year because of recurrent bleedings from upper GIT. Performed examinations showed the presence of retroperitoneal paraganglioma parasympaticum with multiple metastases in bones. A Zollinger-Ellison syndrome was suspected. The final correct diagnosis was established at last microscopically after surgical excision of the specimens.

The paper presents 15 causes of severe ethylene glycol poisoning in Tarnów region in the years 1982-1993. In the treatment haemodialyses as well as acidosis balancing and aethanol administration as an antidotum were preferred. Acute renal failure was observed in 73% of poisoned patients and mortality rate was 53%. The causes of treatment failure were: high ingested poison dose, too long time between poisoning and administration to hospital (and introduction of an appropriate treatment), critical clinical condition and severe metabolic acidosis.

In the paper five cases of methanol poisoning in Tarnów region treated with hemodialysis are presented and discussed. Despite a high dose of ingested alcohol and high levels of blood methanol concentrations and severe metabolic acidosis all treated patients survived and fully recovered.

The authors have described a case of adenocarcinoma of the jejunum, complicated with its perforation. This case represents an extremely rare of complication. It was not possible to establish the final diagnosis, until the operation was been done.