. Manual of operative surgery. tself. Bands of dense connective tissue unite thecovering of the thyroid with the trachea (ligaments of the thyroid). Fig. 370 248 goitre; bronchocele; struma shows how the pretracheal portion of the deep cervical fascia forms a fibrousor surgical capsule to the thyroid; it is the structure referred to as the fibrouscapsule when the operation of thyroidectomy is described. Any space whichmay exist between the fibrous capsule and the thyroid gland is filled withloose connective tissue. The loose connective tissue is apt to be most abundantbehind the lateral lobes
. Manual of operative surgery. tself. Bands of dense connective tissue unite thecovering of the thyroid with the trachea (ligaments of the thyroid). Fig. 370 248 goitre; bronchocele; struma shows how the pretracheal portion of the deep cervical fascia forms a fibrousor surgical capsule to the thyroid; it is the structure referred to as the fibrouscapsule when the operation of thyroidectomy is described. Any space whichmay exist between the fibrous capsule and the thyroid gland is filled withloose connective tissue. The loose connective tissue is apt to be most abundantbehind the lateral lobes of the gland. This connective tissue under the pres-sure of a goitrous enlargement becomes condensed and is what Mayo speaksof in his subcapsular operation. The parathyroids are two or more glandular bodies which exist on each side ofthe neck behind the lateral lobes of the thyroid. The bodies are elliptical, are 6 or 7 mm. long, 3 or 4 mm. broad and i-may be as much as 15 mm. (Piersoll.) or 2 mm. thick. The length MC. 370. C. Fibrous or surgical capsule. P. Parathyroids. MC. Connective tissue packing, or Mayos Carotid packet of vessels and nerves. Tr. Trachea. Oes. CEsophagus. S. h. Stemo-liyoid. S. S. m. Sterno-mastoid. The parathyroids lie between the fibrous capsule and the thyroid, in theloose areolar tissue there present; they may be in contact with the thyroid orwith the capsule or with both. Halsted writes, One is likely, therefore, toencounter these little bodies, usually two on each side, at any level from thesuperior to the inferior pole on the postero-internal surface of the gland, butmost commonly just internal to the rounded postero-external border and quiteregularly near the site of the distribution of the terminal branches of the inferiorthyroid artery. If the thyroid is lobulated in this situation, as is quite com-monly the case, a parathyroid may be concealed in the cleft between thelobules. The parathyroids are little ovoi
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