Leptospirosis with acalculous Besso JG, Wrigley RH, Gliatto JM, Webster CR - Barton, LL; Escobedo, MB; Keating, JP; Ternberg, JL (Ultrasonographic appearance and clinical findings in 14 dogs with gallbladder mucocele. Vet Radiol Ultrasound, 2000)