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Black or dark spots can be detected when someone undergoes imaging test that can include CT scans and MRIs. These dark spots, which are abnormal tissue matter, are referred to as a brain lesion, according to Mayo Clinic.... More »

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Cat World explains that black spots that appear in a cat's mouth are caused by an increase in the number of melanocytes, or pigment producing cells. This harmless condition is commonly called "orange cat lentigo" due to ... More »

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Black spot on roses is the result of a persistent fungus, Diplocarpon rosae, that invades rose bushes, especially in wet weather. The disease is progressive and will cause all leaves to drop from the plant. More »

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Benign tumors, cancerous tumors, abnormal fat accumulations, cysts and abscesses are all possible causes of spots observed on the liver during medical scans, according to the California Pacific Medical Center of the Sutt... More »

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Black stools in adults may be the result of bleeding in the upper part of the small intestine, the esophagus or the stomach, according to MedlinePlus. A person who is taking iron supplements, bismuth subsalicylate or bla... More »

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Black dots on the gums are caused by a variety of dental conditions, including bruising, pigmentation, plaque, tattooing caused by amalgam (silver) fillings and, rarely, a form of oral cancer, states Christopher Jacoby a... More »

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Black or brown spots between the teeth are a symptom of gum disease, reports Healthy Smiles. Gum disease starts as gingivitis and, if not treated, develops into periodontitis; however, black spots are a sign of periodont... More »

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