Role of sonography in the diagnosis and treatment of a ganglion cyst compressing the lateral branch of deep peroneal nerve.

Selective compression neuropathy of the lateral branch of the deep peroneal nerve is rare. A 55-year-old woman with ankle instability and mild weakness of extension of the toes was examined with sonography (US), which revealed the presence of a ganglion cyst compressing selectively the lateral branch of the deep peroneal nerve. US-guided aspiration of the cyst resulted in nerve decompression and progressive resolution of symptoms. This case demonstrates the importance of examining the deep peroneal nerve and its branches when performing US in the clinical setting of ankle instability. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound 45:108-111, 2017.

Ultrasound findings of teres minor denervation in suspected quadrilateral space syndrome.

Isolated teres minor denervation is an uncommon finding on sonographic examination. We present a case of a 64-year-old man with increased echogenity of the teres minor muscle and a slight reduction in muscle bulk. Investigation of a suspected axillary nerve lesion included a detailed sonographic examination of the posterior shoulder and the axillary space, followed by MR imaging and electrophysiologic testing. This case demonstrates the potential importance of examining rotator cuff muscles when performing sonographic examination of the shoulder in patients with persistent symptoms, no history of trauma, and absence of tendon tears.

Sequential CT evaluation of isolated non-penetrating pancreatic trauma.

CONTEXT: Isolated pancreatic injuries resulting from non-penetrating trauma are rare. CT is currently the modality of choice in evaluating pancreatic injury. Delay in recognizing patients who need immediate surgery is an important cause of increased morbidity due to specific pancreatic complications. CASE REPORT: A 47-year-old man with blunt abdominal trauma after a car accident underwent a CT scan. Initial CT findings included diffuse pancreatic enlargement suggestive of isolated grade 1 pancreatic injury. A follow-up CT scan 3 days later revealed a fracture line at the pancreatic body. Subsequent surgical exploration confirmed the suspicion of concomitant duct transection. Seven months after surgery, a pseudocyst had formed adjacent to the site of the injury. CONCLUSIONS: This case demonstrates the potential importance of serial CT scans in the diagnosis, grading and management of isolated pancreatic injury.