Fig. 1From: Parathyroid carcinoma in a 13-year-old girl with a long-term survivalHistological findings of the parathyroid tumor removed when the patient was 13 years old and the lung metastasis removed when she was 33 years old (hematoxylin and eosin stain). a Capsular invasion of the tumor (arrows). b Vascular invasion of the tumor cells (arrow). c Pleomorphic tumor cells with a large nucleus. d Tumor cells with pleomorphic nuclei showed solid growth, just like the primary tumorBack to article page