Figure 3From: Parathyroid involvement in thyroid cancer: an unforeseen eventLow power picture of an H&E stained section of the parathyroid with an intraparenchymal metastasis. The lobe of the thyroid is infiltrated by a well demarcated, irregularly circumscribed, multinodular, solid, tan neoplasm with microscopic characteristics of poorly differentiated follicular carcinoma, which shows extensive vascular invasion. A grossly identified parathyroid on the surface of the lobe shows infiltration by the carcinoma, not in direct continuity with the tumor of the thyroid. This is a 500 μm calibrated picture.Back to article page