ACTA CYTOLOGICA, vol.45, no.3, pp.441-444, 2001 (SCI-Expanded)
BACKGROUND: Curschmann's spirals, first described more than 100 years ago, are common in cytologic specimen from the respiratory tract and have also been observed in cervical smears, urine, and peritoneal and pleural effusions. No simple theory can explain the exact mode of spiral formation, which is presumed to be a complex physical and biochemical phenomenon.