Multiple lymphomatous polyposis: rectal prolapse as an atypical presentation of the disease.

Multiple lymphomatous polyposis is a rare entity that can involve different types of both B-cell and T-cell lymphomas, including mantle cell lymphoma. A 57-year-old male patient is presented with prolapse of the rectal canal associated with data of lower digestive tract bleeding. A colonoscopy and subsequent upper endoscopy were performed with findings compatible with lymphomatous polyposis.

Pancreatic lymphoma during pregnancy.

A 41-year-old female with 21 weeks of gestation is admitted to the hospital complaining of abdominal pain in epigastrium accompanied with pyrosis, nausea and vomit. Physical examination revealed a gravidic uterus at the level of the umbilicus and a painless epigastric mass. Laboratory test were normal.

[Biotinidase deficiency and vascular ring malformation: case report].

Biotinidase deficiency is an autosomal recessive metabolic disorder that affects the cleavage of biotin. Family studies of the index case found that both parents are usually carriers and siblings have the altered gene, but only homozygotes have manifestations that vary depending on the deficiency grade. Mothers may have moderate deficiency and be asymptomatic; biotin deficiency in pregnant women causes defects in children.