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Intralesional surgical resection is considered standard of care for which of the following conditions?
High grade sarcoma surrounding a major nerve
Intermediate grade solitary fibrous tumor
Atypical lipomatous tumor
Pigmented villonodular synovitis
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A 35-year-old man presents to your office complaining of vague knee pain and a fullness surrounding his patellar tendon. MRI and histology are shown. What is the name of the analogous histologic disease when located away from the synovial lining of joints?
Giant cell tumor of bone
Giant cell tumor of tendon sheath
A 38-year-old male presents with right knee pain that is progressively worsening over the past 5 months. He is unable to perform his occupation as a construction worker and had to stop playing tennis. He denies constitutional symptoms. The patient had an effusion that was drained by his primary care provider 2 months ago and he took a picture of it on his cell phone to show you (Figure A). On examination there is an effusion in the knee and there is tenderness along the parapatellar region. He has full knee extension and flexion, but open chain knee extension exacerbates his pain. His Lachman examination demonstrates 3 mm of anterior translation with an endpoint noted. A radiograph is shown in Figure B and MRI images are shown in Figure C and D. What is the next most appropriate step in management?
Neoadjuvant chemotherapy, surgical resection, adjuvant chemotherapy
Neoadjuvant external beam radiation, wide surgical resection, and adjuvant chemotherapy
Arthroscopic or open resection of the lesion
Observation with serial radiographs and physical therapy for lower leg and core strengthening
Arthroscopic or open plica removal and lateral retinacular release
A 45-year-old male presents with a 6-month history of recurrent knee effusions and pain. There is no history of trauma. Exam shows a large joint effusion, decreased range of motion, and a nodularity surrounding the knee. MRI and arthroscopic intra-articular picture are shown. What is the most likely diagnosis?
A 24-year-old man presents with pain and a mass in the anterior ankle. Plain radiographs are normal, MRI is shown in Figure A (arrrows indicate the mass), and biopsy is shown in Figure B. What is the most likely diagnosis?
Aneurysmal bone cyst
Pigmented villonodular synovitis (PVNS)