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Previous Volume 341:38-46 July 1, 1999 Number 1 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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Occult gastrointestinal bleeding typically refers to bleeding that is not apparent to the patient. The potential for occult bleeding is emphasized by the finding that for melena to be produced consistently, 150 to 200 ml of blood must be present in the stomach.¹ Moreover, patients with gastroduodenal blood loss of 100 ml per day may have stools that appear normal.² Thus, occult bleeding is usually identified only by tests that detect fecal blood or, if bleeding is sufficient, when it becomes manifest as iron deficiency. Occult gastrointestinal bleeding can also refer to bleeding that is clinically evident but from an . . . [Full Text of this Article]

Fecal Occult Blood

Fecal Occult-Blood Tests

Differential Diagnosis and Approach to Evaluation

Treatment and Outcome

Anemia Due to Iron Deficiency

Differential Diagnosis and Approach to Evaluation

Treatment and Outcome

Gastrointestinal Hemorrhage of Obscure Origin

Differential Diagnosis and Approach to Evaluation

Treatment and Outcome

Source Information

From the Division of Gastroenterology, Duke University Medical Center, Durham, N.C.

Address reprint requests to Dr. Rockey at the Liver Center, Duke University Medical Center, Sands Bldg., Rm. 336, Research Dr., Box 3083, Durham, NC 27710, or at dcrockey@acpub.duke.edu.

References

Related Letters:

Occult Gastrointestinal Bleeding
Caride V. J., Rockey D. C.
Extract | Full Text  
N Engl J Med 1999; 341:1477-1478, Nov 4, 1999. Correspondence

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