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Helicobacter pylori - Portal Neonatal

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Outcome<br />

This neonatal diarrhea, which resists all treatments,<br />

requires permanent PN. However, it seems<br />

that some infants have a rather milder phenotype<br />

than others. 50 Thus, because of partial intestinal<br />

function and limited amount of stool output, some<br />

patients only need partial long-term PN, with three<br />

to four weekly infusions. Careful monitoring<br />

should be performed, in order to avoid progressive<br />

growth retardation. In most patients, the severity<br />

of intestinal malabsorption and diarrhea make<br />

them totally dependent on daily long-term PN<br />

with subsequent risk of complications. This is<br />

therefore another indication for intestinal transplantation.<br />

51–53<br />

Other diseases of the intestinal<br />

epithelium<br />

The classification of IDI is probably incomplete,<br />

since other forms with abnormal small-bowel<br />

mucosa have been described. These include mitochondrial<br />

DNA rearrangements; congenital enterocyte<br />

heparan sulfate deficiency, phosphomannose<br />

isomerase deficiency; and a<br />

carbohydrate-deficient glycoprotein syndrome<br />

with hepatic-intestinal presentation. 54–59 Rare<br />

diseases involving the immune system and smallbowel<br />

mucosa, 60 or severe intractable enterocolitis<br />

of infancy, 6 seem clearly different from the<br />

above-described diseases. The so-called ‘phenotypic<br />

diarrhea’ that is an IDI syndrome associated<br />

with phenotypic abnormalities and immune deficiency<br />

is one of these rare diseases recently<br />

reported. The patients present with diarrhea starting<br />

within the first 6 months of life (

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