562 THE DUCTLESS GLANDS ENDOCRIN GLANDS 



ACCESSORY OR ABERRANT THYROIDS 



These bodies, first described by Zuckerkandl (1879), are widely dis- 

 tributed through the connective tissue of the cervical region. They 

 are most frequently found in the course of the embryonic thyroglossal 



FIG. 485. FROM THE BORDER OF A MASS OF ABERRANT THYROID TISSUE OF MAN, 

 OCCURRING IN THE REGION OF THE PARATHYROID GLANDS. 



Hematein and eosin. Photo. X 204. 



duct and in the immediate vicinity of the lateral lobes of the thyroid. 

 They present the appearance of embryonal remnants of thyroid tissue, 

 but are found in nearly all individuals. 



The colloid follicles of the aberrant thyroids are usually small, 

 though, in the larger specimens of these bodies, they may attain as great 



