Question:  A 67 year old male undergoes an uncomplicated transoral robotic assisted wide field tonsillectomy and ipsilateral neck dissection for a T2N2bM0 squamous cell carcinoma of the right palatine tonsil.  After completing the neck dissection you proceed to ligate the lingual artery to reduce postoperative hemorrhage risk.  You tell your junior resident that this is most easily found in Lesser's triangle.  What are the borders of this anatomic region?  [Answer will be posted with next week's new question]

Answer to last week's question, "A Buzz In The Ear" (June 6, 2016): 

Glomus jugulare.