Pneumosinus dilatans with shift of midline intracranial structures: A case report.

Pneumosinus dilatans (PSD) is an abnormal dilatation and enlargement of one or more paranasal sinuses, extending beyond the anatomic bony boundaries, without defect or thinning of its bony walls. It is documented by only a few reports. Usually asymptomatic, it is in general found incidentally on imaging. It is important for radiologists to recognize the diagnosis and rule out eventual associated conditions such as meningiomas, orbital tumors, arachnoid cysts, and fibrous dysplasia. We report the case of PSD diagnosed incidentally in a 51-year-old female patient who presented to the emergency department with confusion.

Extraskeletal Ewing sarcoma: A case report.

Extraskeletal Ewing sarcoma is a rare tumor mainly affecting young people, of poor prognosis with very high mortality rates especially in metastatic forms. It can affect different locations, without specific clinical signs, which delays the diagnosis. Imaging plays an important role for diagnosis, staging, preoperative assessment and surveillance. The diagnosis should be set early to a better management. We report a case of a 30-year-old man with a large extraskeletal Ewing sarcoma of the left thigh. The patient was initially treated with chemotherapy. Unfortunately, the tumor has increased in size making surgery impossible. The patient ultimately died of pulmonary metastases.

Giant aneurysmal bone cyst of the scapula: A case report.

Aneurysmal bone cyst (ABC) is a benign bone tumor affecting mainly children and young adults. It occurs in the metaphysis of the long bones. The scapula is a very rare location. Imaging may be highly suggestive of ABC in cases of an osteolytic, expansive, and hemorrhagic lesion with fluid-fluid levels and thin septa. The diagnosis must systematically be confirmed by performing a biopsy, in order to adopt the best therapeutic strategy. There are several therapeutic means, but wide resection remains the gold standard. The evolution is very variable and can go from spontaneous healing to recurrence with the destruction of the bone. We report a rare case of aneurysmal bone cyst of the scapula in a young patient.