Fig. 3From: Distribution patterns of foot and ankle tumors: a university tumor institute experienceOsteolytic lesions of the calcaneus with different radiographic appearance and varying aggressive behaviour: (a) Ewing sarcoma in a 31-year old male patient, (b) simple (calcaneal) bone cyst in a 11-year old male patient, (c) secondary squamous cell carcinoma based on chronic osteomyelitis in a 82-year old male patient and (d) low-grade chondrosarcoma in a 45-year old femaleBack to article page