Assertion: mediastinum's vessel | /r/CapableOf | pierce the pectoralis major
Facets:
Source sentences:
text: The vessels which drain the medial part of the mamma pierce the thoracic wall and end in the sternal glands, while a vessel has occasionally been seen to emerge from the upper part of the mamma and, piercing the Pectoralis major, terminate in the subclavicular glands (Fig. 607).