1. In 1994 he devised the commonly-accepted classification for acanthosis nigricans. 2. In 1981 he first described acral acanthotic anomaly ( acral acanthosis nigricans ). 3. In 1981 he discovered and described acral acanthosis nigricans. 4. An alternate classification system still used to describe acanthosis nigricans was proposed in 1994. 5. The epithelium may show hypertrophy ( e . g . acanthosis ) or atrophy. 6. They may be associated with acanthosis and hyperkeratosis. 7. If a biopsy is taken, the histopathologic appearance is one of hyperkeratosis and acanthosis . 8. The histopathology of fiddler s neck frequently shows hyperkeratosis and acanthosis , along with plugging of follicles. 9. "' Glycogenic acanthosis "'is a nodular appearance of the mucosa of the esophagus. 10. Within those affected by SADDAN, acanthosis nigricans develops early on, usually in infancy or early childhood.
