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Epithelioid hemangioma is a rare, histologically benign but locally aggressive primary vascular neoplasm that can rarely arise in bone. Mainstay treatment is surgical resection or curettage with bone grafting. We report a novel multidisciplinary, joint-sparing treatment approach for an epithelioid hemangioma of bone arising in the acetabulum causing severe thinning of the subchondral bone plate. After 4 sessions of transarterial bland particle and ethanol embolization, the resultant increased ossification of the tumor allowed preservation of the articular surface during surgical resection. Imaging follow-up 14 months after surgical resection showed no evidence of recurrence and continued ossification of the portions of the lesion treated only with embolization.

Dinosaur tracks have been illustrated since they were first found. The earliest illustrations depicted dinosaur tracks as the work of mythical beings. With the advent of scientific inquiry into dinosaur tracks in the nineteenth century, natural explanations were sought for the fossil tracks. Illustrations of the period were relatively realistic but were influenced by then-current beliefs and were constrained by the artists’ skills and by what scientists considered salient. In the mid-nineteenth century, the first photographs were used for the scientific study of fossil tracks. Photography eliminated some limitations of artistic talent and showed complete specimens, not just aspects that were deemed salient. The ability to compare and name similar tracks from disparate authors and places became easier. Advances in photography, laser scanning, optical scanning and lidar, and the ability to manipulate images with computers, have enabled the modern synthesis of illustrating dinosaur tracks, which combines many types of images. With each advance and the adoption of newer technologies, the older methods have not been retired. Rather, we have continued to see new uses for old methods and an integration of illustrative styles.For Patrick. Your friendship and your vision will be so deeply missed.

Malignant granular cell tumor (GCT) is a rare sarcoma that is often difficult to differentiate histologically from its benign counterpart.A 69-year-old Caucasian man with a long history of multiple GCTs presented with new-onset left shoulder pain and limitation of movement. Radiographic studies revealed a lytic lesion within the left humeral metaphysis and a pathologic fracture. Computed tomography-guided fine needle aspiration and needle core biopsies were performed. The patient subse quently underwent curettage of the tumor with prophylactic fixation of the left proximal humerus. He received postsurgical radiation and physical therapy.The diagnosis of metastatic malignant GCT was rendered in this case. The fne needle aspiration ofmetastatic GCT may lack cytologic features of malignancy. The diagnosis necessitates clinical correlation and an understanding of the spectrum of histopathologic changes in GCT and malignant