Identifier: breastitsanomali00deav (find matches)
Title: The breast: its anomalies, its diseases, and their treatment
Year: 1917 (1910s)
Authors: Deaver, John B. (John Blair), 1855-1931
Subjects: Breast Breast X-rays Breast Diseases Breast Neoplasms Radiotherapy
Publisher: Philadelphia, P. Blakiston's Son & Co
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons

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clavi-pectoral fascia. Purulent collections between the pectoral muscles or behind the pectoralis majormuscle are directed to the anterior border of the axilla or to the upper end of the delto-pectoral groove by the clavi-pectoral fascia. When situated beneath the pectoralisminor muscle and therefore posterior to the fascia, abscesses are either confined to the SURGICAL ANATOMY OF THE BREAST 31 axillary space, pointing at the base of the axilla through the foramen of Langer (seeaxillary fascia), or follow the axillary sheath upward to point above the clavicle in thesupra-clavicular triangle. The costo-coracoid membrane, a dense quadrilateral sheetof the clavi-pectoral fascia, extends from the upper inner edge of the pectoralis minormuscle to the undersurface of the clavicle. It is attached externally to the upper sur-face of the coracoid process of the scapula and fuses internally with the fascia coveringthe two upper intercostal spaces. The costo-coracoid membrane is attached to the
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Fig. 14.—Deep infra-clavicular triangle. The pectoralis major muscle and the clavi-pectoral (costo-coracoid membrane) fascia have been removed thus exposing the apex of the axillary space. The latter issometimes called the deep infra-clavicular triangle. sheath of the axillary vein (third portion) above and is therefore directly continuouswith the pre-vertebral layer of the deep cervical fascia. The practical importance of aknowledge of this relationship will be shown in the description of the axillary lymphnodes. Infra-clavicular Triangles.—The space beneath that portion of the clavicle internalto the anterior edge of the deltoid muscle and under cover of the clavicular head of the 32 THE BREAST pectoralis major muscle is subdivided into two triangles by the costo-coracoid membrane.The anterior of these, the superficial infra-clavicular triangle, not infrequently containsseveral small lymph nodes, which, as Poirier has shown, receive vessels from the uppersegment of the breast. G

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