Starting with A for "ACE inhibitor" and continuing through to Y for "Yolk Sac Tumour", we give you succinct explanations for scientific and medical terms in clear and simple words.
- Faecal Blood, OccultName for blood in the stools (faeces) which is not visible
Occurrence: Mostly in tumours of the large bowel (e.g. intestinal polyps, colon carcinoma). Usually occurs at an early stage, before the development of other symptoms of the tumour, such as visible contamination with blood or anaemia.
Detection: Mostly with the Guajak test, a rapid test in which small quantities of faeces are applied to a strip of paper and mixed with a special dye. The test may also be positive as a result of bleeding of the gums or eating meat. The test for occult blood is, for example, performed during cancer screening.
Glossary entries: Roche and Walter de Gruyter, Berlin