73 



I 



Cylindroids appear like hyaline casts, but are large and 

 band-like. Their breadth is uniform and they often contain crys- 

 tals, epithelial cells and corpuscles. 

 They are soluble in acetic acid and 

 are of renal origin. No especial sig- 

 nificance is attached to them. 



Mucous cylinders, sometimes 

 called cylindroids, are usually not of 

 uniform breadth and seldom contain 

 morphologic constituents and are in- 

 soluble in acetic acid. They are usu- 

 ally found in any urine containing 

 an abundance of mucus and are of 

 no special significance. 



Fig. 29. Cylindroids. 

 a. b, Cast-like forms; c, 

 Filamentous forms. (Og- 

 den). 



Upon special blanks, test specimens of urine quantitatively, 

 the number and amount of constituents being unknown. 



