PATHOLOGIC QUIZ CASE 1
C. Ron Cannon, MD, Jackson, Miss
A 56-year-old man noted a rapidly enlarging mass over the mandible for two weeks. The mass was not associated with pain or dental symptoms such as malocclusion or trismus. The patient had hypertension and, approximately four months before being seen, he had undergone a radical nephrectomy for renal cell carcinoma.
On examination he had a firm, nontender, 5 x 6-cm mass involving the mandible and overlying soft tissues. Intraorally there was an area of granulation tissue and ulceration over the angle of the mandible. Physical examination disclosed no other abnormalities.
Part of the mandible was removed (Fig 1). Approximately a 1-cm margin of normal bone is seen on either side of the tumor. The tissue in the photograph, is 7 cm wide. The centrally located tumor is solid and homogeneous. A representative histologic section is shown in Fig 2.
What
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