January, 1940. Septic Infections of the Neck

Reference to Fig. i will indicate that the narrow isthmus of the neck comprises four principal groups of structures which, for the purposes of this paper, are referred to as Units A, B, C, and D. Unit D is called the " Ensheathing " unit in that it effectively separates the superficial fascia from deeper structures. This anatomical division also serves to separate the two principal types of neck infeclion, namely those superficial to and those deep to the ensheathing unit. The former group consists of carbuncles towards the back of the neck and simple superficial infections towards the front. The latter group comprises a variety of