| pseudoacanthosis nigricans | Acanthosis nigricans secondary to maceration of the skin from excessive sweating, or occurring in obese and dark-complexioned adults, or in association with endocrine disorders; not associated with visceral cancer. (05 Mar 2000) |
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| acanthosis nigricans | <radiology> Pre-malignant skin disorder, papillomatosis, pigmentation, hyperkeratosis, multiple filling defects in oesophagus, increased risk of carcinoma in stomach and abdomen (12 Dec 1998) |
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| nigricans | Blackish. Origin: L. Fr. Niger, black (05 Mar 2000) |
| keratosis nigricans | <radiology> Pre-malignant skin disorder, papillomatosis, pigmentation, hyperkeratosis, multiple filling defects in oesophagus, increased risk of carcinoma in stomach and abdomen (12 Dec 1998) |