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Dermatofibrosarcoma protuberans (DFSP) is a rare soft tumor which originally represents a cutaneous sarcoma. It grows slowly and presents usually as nodular superficial lesion on the trunk or the extremities. Although these tumors are locally aggressive with high rate of recurrence following surgery; the prognosis is considered excellent when it is effectively treated. The radiological appearance of this tumor has rarely been studied and findings infrequently discussed in the literature probably because many lesions underwent resection before imaging. Although imaging is infrequently performed for this lesion; it can show characteristic features and demonstrate the full extent. Imaging may also play a role in the differentiation of this tumor from more serious soft tissue lesions such as more aggressive sarcomas and hemangioma. In this article, we discuss the imaging findings of DFSP that can aid in its diagnosis and its variable appearances. In addition; the clinical presentation and treatment options are also described with review of the previous literature.

Aneurysms of the gluteal arteries are very rare with the majority being post-trauma pseudoaneurysms. Generally, management of these aneurysms could be surgical or through endovascular techniques. We present a case of a superior gluteal artery pseudoaneurysm complicating a pelvic fracture that presented as a gluteal mass. It was successfully treated by transcatheter coil embolization. We review the presentation, imaging, and treatment options. Aneurysms have to be considered in the differential diagnosis of soft tissue masses, therefore lesion intervention by aspiration or needle biopsy should not be tried before ruling out a possible vascular nature which will easily be revealed by ultrasound Doppler or computed tomography scans.

Necrotising fasciitis is a rapidly progressive soft tissue infection that leads to diffuse tissue necrosis. It is associated with systemic toxicity and rapid deterioration resulting in high mortality. Rapid diagnosis and prompt treatment are essential to improve the outcome. We report the case of a 26-year-old woman who presented with severe thigh pain and swelling associated with irritability of a few hours' duration following 2 days history of right abdominal pain. Urgent MRI and CT scan showed features of necrotising fasciitis in the thigh spreading from an inflamed appendix. Emergency surgery was performed which revealed perforated appendix with disseminated infection in the intraperitoneal and retroperitoneal spaces as well as the right thigh. The patient rapidly deteriorated with evidence of sepsis, shock and renal impairment. In spite of surgery and all supportive measures, she succumbed shortly postoperatively. Blood culture revealed Staphylococcus aureus and Streptococci, while tissue culture showed growth of Escherichia coli and proteus.

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