occult blood

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Related to occult bleeding: hematochezia

oc·cult blood

n. sangre oculta, presencia de sangre en cantidad tan ínfima que no puede verse a simple vista.
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The common bleeding sites in SHiP include the serosa of the posterior wall of the uterus, the broad ligaments, or the uterosacral ligaments, and bleeding was recorded as venous at the site of varicosities.[4] Due to the enlarged uterus in advanced pregnancy and the occult bleeding site, it is difficult to make the diagnosis of SHiP preoperatively.
With no symptoms, CRC patients may already have occult bleeding detected in the stools.
In conclusion, the data in this observational pilot study provided some preliminary indication that a relatively low incidence of GI complaints and occult bleeding can occur during prolonged cycling event even in the heat.
The indication of gastrointestinal bleeding (GIB) included patients with history of overt bleeding, occult bleeding identified via a guaiac-based fecal occult blood test (gOBT) (Hemoccult II or Hemoccult Sensa; Beckman Coulter Inc., Brea, CA), or anemia.
Apart from the cutaneous involvement, the digestive lesions bleed spontaneously, in most cases generating occult bleeding, causing iron-deficiency anemia.
Symptoms are often modest and rather nonspecific, and clinical indication for endoscopic study stems only from the need to find the cause of occult bleeding responsible for chronic, iron-deficiency anemia as in this patient [4].
Of the 229 VCEs, 154 (67.3%) were done because of occult bleeding and 75 (32%) because of overt bleeding.
The particularity of the case was the presence of iron deficiency anemia and positive stool for occult bleeding due to colonic ulcerative lesions making the diagnosis even more difficult.