[Sonography of peripheral nerves. Part II: lower limbs].

On sonographic images, the peripheral nerves have a fibrillary structure, ribboned on longitudinal images and ovoid on cross-section images. The nerves travel between the muscle groups, often with blood vessels, or in canals. Recently improved ultrasound devices are able to investigate the peripheral nerves along their entire length, as far as the sonographer has thorough anatomical knowledge, rigorous technique, and, when searching for pathology, good clinical notions.

[Gallstone ileus. Abdominal CT usefulness].

The authors report the case of a 93-year old woman referred to the emergency department and presenting with an intestinal obstruction. Abdominal CT reveals a biliary ileus caused by the migration and the impaction of a 3 cm gallstone in the small bowel. Surgical treatment by enterolithotomy was successful.

[Tuberculous sacroiliitis: report of a case].

Our case concerns a 32-year old Cameroonian male presenting with tuberculous sacroiliitis. Diagnosis was made on the basis of a positive abscess needle aspirate. Tuberculous sacroiliitis is rare and generally an isolated phenomenon.

[Jejunal lipomatosis with intussusception and volvulus. A case report].

We report the unusual case of a 48 year old woman with jejunal lipomatosis complicated by intestinal intussusception and volvulus. Showing fatty masses CT allowed accurate diagnosis.

[Spontaneous regression of testicular tumor].

We report the case of a 33-year-old man presenting with a retroperitoneal seminoma secondary to a testicular tumor which had completely and spontaneously disappeared (burned-out or shrinking seminoma). Ultrasound only showed a fibrous scar in the right testis. A careful study of the testicles should be considered in all male retroperitoneal tumor, even if they are asymptomatic, to exclude an occult cancer or more rarely a spontaneously involuted tumor.

Pulmonary nodular lesions in a 70-year-old man.

Bronchiolitis obliterans organizing pneumonia (BOOP) is an uncommon but increasingly recognized clinicopathologic syndrome. This report illustrates a proteiform clinical presentation of BOOP in a 70-year-old patient with cough, low-grade fever, weight loss, and hemoptysis. Chest radiograph and computed tomography (CT scan) showed nodular lesions.

[Fournier's gangrene: emergency diagnosis].

We present one case of Fournier's gangrene in a 56-year alcoholic patient. The source of infection was an anal fistula. Prompt diagnosis was based on CT and ultrasonography of the pelvis.

[Burkitt's lymphoma of the appendix].

We report the case of a 12-year-old European boy presenting with an appendicular Burkitt's lymphoma. He complained of right lower abdominal pain mimicking acute appendicitis. Ultrasonography and abdominal CT showed an appendicular mass which features were strongly suspicious for malignancy.

[Metastasis to the gallbladder secondary to a clear cell renal tumor].

Metastases from renal cell carcinoma metastases can involve unusual sites. We report the US and CT findings of such a metastasis to the gallbladder.