[Congenital pancreatic cyst]. / Quistes malformativos del páncreas.

A case of a congenital cyst of the pancreas occurring in an adult woman and successfully treated by resection, is reported. The presence of cylindrical epithelium in the cystic cavity, the high amylase contents of the cyst and the ERCP examination made the diagnosis.

[Anorectal malignant melanoma]. / Melanoma maligno anorectal.

The cases of four patients who are carriers of primitive anorectal malignant melanoma are presented, reviewing at the same time the medical literature available. The clinic of all these patients was similar: pain, proctorrhagia, tumors, tenesmus, hemorrhoids and changes in the intestinal rhythm. One of these cases was similar to thrombosed hemorrhoids, and for this reason we believe that all of the parts that are removed should be biopsied. The prognosis of this pathology is in general adverse, notwithstanding the treatment received. There are very few cases on record that have survived more than 5 years, with early diagnosis and treatment with an abdominal-perineal resection. Radiotherapy and chemotherapy can reduce the size of the lesion but it is acknowledged that the prognosis will not change.

[Experimental peritonitis: sequential bacteriologic study of the lymph and blood]. / Peritonitis experimental: estudio bacteriológico secuencial en linfa y sangre.

In 7 dogs with fecal peritonitis, induced by incision of the cecum, and in the same number of control animals the thoracic duct was cannulized at the neck level together with a femoral vein for the purpose of sequential study of the routes of bacterial dissemination. The findings show: a) rapid appearance of germs in lymph and then in blood in animals with peritonitis, b) a progressive increase in the number of species isolated in each sample, and c) that the lymphatic flow and drainage of bacterias lasted throughout the 12 hours that the experiment lasted. The microbes isolated in lymph and blood were related to the flora of the intestinal segment where the infection originated, with development of a large number of anaerobic species.

Melanoma maligno anorectal. / [Anorectal malignant melanoma]

The cases of four patients who are carriers of primitive anorectal malignant melanoma are presented, reviewing at the same time the medical literature available. The clinic of all these patients was similar: pain, proctorrhagia, tumors, tenesmus, hemorrhoids and changes in the intestinal rhythm. One of these cases was similar to thrombosed hemorrhoids, and for this reason we believe that all of the parts that are removed should be biopsied. The prognosis of this pathology is in general adverse, notwithstanding the treatment received. There are very few cases on record that have survived more than 5 years, with early diagnosis and treatment with an abdominal-perineal resection. Radiotherapy and chemotherapy can reduce the size of the lesion but it is acknowledged that the prognosis will not change.