Occult Blood Positive: Causes & Reasons

Possible Causes for Occult Blood Positive

[…] to check for anemia Colonoscopy Stool test for occult (hidden) blood (a positive test result suggests bleeding from the colon) Treatment It is important to find the cause [ufhealth.org]

Colonoscopy Stool test for occult (hidden) blood (a positive test result suggests bleeding from the colon) It is important to find the cause of bleeding in the colon and [medlineplus.gov]

Stool test for occult (hidden) blood (a positive test result suggests bleeding from the colon). [medigoo.com]

Jejunal Vascular Anomaly with Hemorrhage

[…] test, or iron deficiency anemia with or without a positive fecal occult blood test. [aafp.org]

Positive fecal occult blood testing When a positive fecal occult blood test is obtained in the context of evaluating upper abdominal symptoms, an EGD should be the first diagnostic [uwgi.org]

Her average hemoglobin has been of 10.3 gr/dl, Fecal Occult Blood Test was positive multiple times the enteroscopy shows multiple tiny 1 mm. vascular lesions Hereditary hemorrhagic [gastrointestinalatlas.com]

Cronkhite-Canada Syndrome

Blood tests will often show anaemia, hypoproteinamia, electrolyte disturbances, nutritional deficiencies, and positive ANA. Faecal occult blood is positive. [dermnetnz.org]

Fecal occult blood was positive in all six cases. Serum hemoglobin, potassium, calcium and protein were below the normal range in two cases. [ncbi.nlm.nih.gov]

He had occult- blood positive stool. [ncbi.nlm.nih.gov]

Colon Polyp

Fecal occult blood was positive on two occasions. On examination, a vague mass was palpable in the left upper quadrant of abdomen. [ncbi.nlm.nih.gov]

[…] polyps in patients with positive faecal occult blood tests. [ncbi.nlm.nih.gov]

(called faecal occult blood test (FOBT). [netdoctor.co.uk]

Embolic Mesenteric Infarction

blood may be positive in up to 25% GI bleed (most pts); frank bleeding more indicative colonic dz, w/small bowel dz usually occult, rare hematochezia Abdominal tenderness [fprmed.com]

Up to 25% will have a positive fecal occult blood test, but this, too, is not a specific finding. any pt with severe AP and a paucity of clinical findings (the classic ‘pain [emergencymedicinecases.com]

[…] abd angina Fear of eating, wt loss Physical Exam/Signs Late findings : abdominal distention, shock, peritoneal irritation (indicative of infarction and perforation) Fecal occult [fprmed.com]

Peptic Esophagitis

blood positive test acute presentation: melena / hematochezia (20%) hematemesis (30%) both melena and hematemesis (50%) perforation affects up to 6% of ulcer patients 1 generalized [radiopaedia.org]

[…] stool occult blood test may diagnose bleeding that is coming from the irritation in the esophagus, stomach, or intestines. [stlukes-stl.com]

[…] hemorrhage most common complication affecting 14% of ulcer patients 1 most common cause of upper gastrointestinal tract hemorrhage variable presentation incidental: fecal occult [radiopaedia.org]

Gastrointestinal Hemorrhage

Chronic or occult gastrointestinal bleeding is not apparent to the patient and usually presents as positive fecal occult blood or iron deficiency anemia. [ncbi.nlm.nih.gov]

Robust patients with brown stools that test positive for occult blood, on the other hand, may harbor a deadly malignancy or a rapidly fatal aortoenteric fistula. [web.archive.org]

Non-GI sources of blood loss such as hemoptysis and oropharyngeal bleeding can also cause a positive FOBT[ 75 ]. [dx.doi.org]

Mesenteric Infarction

blood may be positive in up to 25% GI bleed (most pts); frank bleeding more indicative colonic dz, w/small bowel dz usually occult, rare hematochezia Abdominal tenderness [fprmed.com]

In five patients occult blood in stools was performed, being positive in three of them. [revistanefrologia.com]

Stool examination was positive for occult blood. Abdominal CT scan showed a distended gall bladder with sludge. [kjim.org]

Juvenile Polyp

A fecal occult blood test was positive. Results of stool viral and bacterial studies were negative. She was started on iron supplementation. [consultant360.com]

(called faecal occult blood test (FOBT). [netdoctor.co.uk]

In clinical practice, JPs may present as childhood intussusceptions or bloody stools, and they may also cause positive fecal occult blood tests in adulthood. [spandidos-publications.com]

Colonoscopy

An 81-year-old man with mild iron deficiency anemia (Hb 12 g/dl) and a positive fecal occult blood test was referred for a colonoscopy. [ncbi.nlm.nih.gov]

Reasons for colonoscopy were dichotomized into surveillance (previous colonoscopy) vs. non-surveillance (positive occult blood test or screening). [ncbi.nlm.nih.gov]

METHODS: This is a retrospective cohort study of patients with a noted family history of CRC or positive fecal occult blood test who underwent a screening colonoscopy at a [ncbi.nlm.nih.gov]

Adenocarcinoma of the Colon

[…] fecal occult blood test. [merckmanuals.com]

Other clinical findings that may provide clues to the diagnosis include a positive fecal occult (hidden) blood test (FOBT), bright red blood per rectum (hematochezia), or [clinicaladvisor.com]

Lower gastrointestinal bleeding A positive fecal occult blood test Specialty Gastroenterology Lower gastrointestinal bleeding, commonly abbreviated LGIB, is any form of gastrointestinal [en.wikipedia.org]

Malignant Neoplasm of the Small Intestine

A positive test for occult blood or hypochromic microcytic anemia was invariably present. [journals.lww.com]

Gastritis

A fecal occult blood test looks for blood in a stool sample; a positive test (meaning blood is present) suggests that there is some sort of bleeding within the digestive tract [verywellhealth.com]

Reticulocytes were increased and a stool sample was heme-occult positive. [casesjournal.biomedcentral.com]

Other studies, including a complete blood count, metabolic panel including albumin, eosinophil count, inflammatory markers, Helicobacter antibodies and celiac screening, were [casesjournal.biomedcentral.com]

Peptic Ulcer

blood positive test acute presentation: melena/hematochezia (20%) hematemesis (30%) both melena and hematemesis (50%) perforation affects up to 6% of ulcer patients 1 generalized [radiopaedia.org]

[…] stool as a result of occult blood loss Melena as a result of acute or subacute gastrointestinal bleeding In patients with perforated peptic ulcer disease, onset of severe [symptoma.com]

Hemorrhoids

[…] fecal occult blood test. 4 Figure 1. [aafp.org]

[…] more than one first-degree relative in whom colorectal cancer or adenoma was diagnosed at age 60 years or younger Patients with iron deficiency anemia Patients who have a positive [aafp.org]

Cecal Adenocarcinoma

Patients with right-side colon adenocarcinoma usually present with cachexia, weight loss, anemia, and positive fecal occult blood unlike those with left-sided colon cancers [hindawi.com]

Case Report A 59-year-old asymptomatic male had positive screening for colon cancer with faecal occult blood testing (FOBT test), therefore he underwent colonoscopy. [omicsonline.org]

CASE REPORT A 69-year-old female with a history of hypertension and diabetes mellitus came to the outpatient clinic due to positive results of a stool occult blood test during [kjco.org]

Acute Gastritis

Adenocarcinoma of the Ampulla of Vater

[…] fecal occult blood test result Very rarely distinctive silver stools, which result from a combination of the absence of bilirubin and the presence of blood. 5 Diagnosis The [slideplayer.com]

Fecal occult blood testing results may be positive in ulcerated or bleeding tumors. [oncology-articles.blogspot.com]

 Up to one-third of patients have chronic, frequently occult gastrointestinal blood loss with an associated microcytic anemia or heme-positive stools.  occasionally present [slideshare.net]

Intestinal Infarction

On admission, his hematocrit had fallen to 19% from his usual level of approximately 30%, and stools were positive for occult blood. [ncbi.nlm.nih.gov]

Gastric Adenocarcinoma

Occult blood was repeatedly positive in stools, and she underwent oesophagogastroduodenoscopy and was found to have gastric adenocarcinoma. [ncbi.nlm.nih.gov]

Massive hematemesis or melena is uncommon, but secondary anemia may follow occult blood loss. [merckmanuals.com]

Physical findings may be unremarkable or limited to heme-positive stools. [merckmanuals.com]

Adenocarcinoma of the Rectum

[…] fecal occult blood test. [merckmanuals.com]

Alternatively, asymptomatic patients with positive screening tests (fecal occult blood, fecal immunochemical test, contrast enema with “apple core” or other lesion, cancer [bccancer.bc.ca]

Endometriosis of the Colon

All patients were interviewed preoperatively about symptoms, abdominal pain, genital bleeding, melena, dyschezia, and fecal occult blood positivity. [jmedicalcasereports.biomedcentral.com]

Oh yeah I guess I could mention the only thing they ever told me found every time was my stool has always been positive for occult blood. [medhelp.org]

Familial Adenomatous Polyposis

If screened after a positive fecal occult blood test result, the prevalence increases to 0.34% to 0.66%. [31] International Worldwide studies of Gardner syndrome kindreds [emedicine.medscape.com]

Ulcerative Colitis

CASE REPORT A 56-year-old woman with no history of colonic diseases visited our hospital because of a positive fecal occult blood test. [ncbi.nlm.nih.gov]

Following a positive fecal occult blood test, she underwent a colonoscopic examination at a local clinic where she was diagnosed with "right-sided" UC concomitant with incidentally [ncbi.nlm.nih.gov]

Moreover, a recent study evaluated the correlation of faecal occult blood (FOB) with mucosal healing via a quantitative immunologic test analogous to those used in CRC screening [endoinflamatoria.com]

Gardner Syndrome

Physical examination reveals multiple epidermal inclusion cysts and a fecal occult blood test is positive. Colonoscopy reveals innumerable colonic polyps. [prep4usmle.com]

[…] faecal occult blood test. [academic.oup.com]

A 26-year-old female patient (174 cm, 64 kg) with mild mental handicap and dysmorphic features (Figure 1A1 and A2) presented at our tertiary referral centre because of a positive [academic.oup.com]

Pediatric Crohn Disease

Stool for occult blood was positive. Abdominal computed tomography (CT) demonstrated extensive gastric and duodenal mucosal fold thickening (Figure 3). [hindawi.com]

Serum levels of gastrin- or histamine-fast achlorhydria (absence of stomach acid) Serum micronutrient levels (malabsorption leads to deficiencies) Occult blood testing and [dermnetnz.org]

[…] electrolyte levels Total protein, albumin (often lowered), and immunoglobulin levels (raised IgG4 is characteristic) Glucose and lipid concentrations Antinuclear factor (usually positive [dermnetnz.org]

Disseminated Intravascular Coagulation

occult blood test) from the DIC. [innovationsincrm.com]

Although there was no overt hemorrhage, the acute anemia probably resulted from a combination of hemolysis, hemopericardium, and gastrointestinal bleeding (positive fecal [innovationsincrm.com]

Diverticulitis of the Colon

[…] fecal occult blood test results have a much higher rate of colon cancer, ranging from 6.4% to 9.4% in separate studies (28–30). [pubs.rsna.org]

[…] approximates the prevalence of colon cancer in the asymptomatic general population than in the symptomatic population; for example, patients undergoing colonoscopy because of positive [pubs.rsna.org]

Inflammatory Bowel Disease Type 1

Stool for occult blood was positive. Abdominal computed tomography (CT) demonstrated extensive gastric and duodenal mucosal fold thickening (Figure 3). [hindawi.com]

Serum levels of gastrin- or histamine-fast achlorhydria (absence of stomach acid) Serum micronutrient levels (malabsorption leads to deficiencies) Occult blood testing and [dermnetnz.org]

Henoch-Schönlein Purpura

Occult blood was positive in 35 cases (49 %); CRP levels were found increased in 19 cases (27 %); anti-streptolysin O titers were increased in 14 cases (20 %) and C3 in 18 [ped-rheum.biomedcentral.com]

D-Dimer tested positive and stool tested positive for occult blood. [hindawi.com]

No history of contact with COVID-19 cases was reported by the parents although the child tested positive by PCR. [hindawi.com]