[A rare tracheal tumour: solitary fibroma]. / Une cause exceptionnelle de tumeur trachéale: la tumeur fibreuse solitaire.

INTRODUCTION: Solitary fibromas are rare anatomo-pathological entities, described initially in the pleural cavity. The mesenchymal origin of these tumours explains their widespread distribution. CASE REPORT: The authors report a case of solitary fibroma of the trachea in a woman of 30 years of age, presenting as acute respiratory distress and preceded by a 2 year history of episodes of dyspnoea diagnosed as unstable asthma. CT and MRI imaging showed evidence of a localised tracheal tumour without mediastinal infiltration. The images and macroscopic appearances were non-specific. Bronchoscopic resection of the tumour gave immediate relief of the symptoms. Histology, which was positive for anti-CD34 antibodies and negative for epithelial, muscular and neurological markers, led to a diagnosis of solitary fibroma with no evidence of malignancy. CONCLUSION: To our knowledge, this observation is the first description of a primary solitary fibroma localised to the trachea. The clinical and radiological features are no different from those of other tracheal tumours. After excision, the prognosis is good but long-term follow-up is necessary on account of the risk of local recurrence or metastasis.

[Pulmonary artery sarcoma during postpartum: CT findings]. / Sarcome de l'artère pulmonaire dans le post-partum: aspects scanographiques.

We report the case of a 28 year-old female, who gave birth seven weeks previously, presenting with a pulmonary artery leiomyosarcoma discovered on a thoracic CT performed for clinical suspicion of pulmonary embolism. This case presents two major points of interest: on the first hand, it is a particular context (young post-partum patient), with classic symptoms of routine pulmonary embolism. On the other hand, the exam clearly demonstrates tumor enhancement, which is characteristic but rarely described.

[Contribution of EKG-gated multislice CT in the diagnosis of arrhythmogenic right ventricle dysplasia: report of two selected cases]. / Apport du scanner volumique avec synchronisation ECG dans le diagnostic de cardiomyopathie arythmogène du ventricule droit: à propos de deux cas choisis.

Arrhythmogenic cardiomyopathy of the right ventricle is characterized by replacement of right myocardial cells by fibro-fatty tissue and arrhythmias. The authors present two cases where EKG gated multislice CT was valuable. In one case, comprehensive evaluation of extensive ventricular dysplasia complicated by intraventricular thrombus was achieved whereas accurate evaluation of the ventricular wall process was possible in another case.

[Secondary diseases of the peritoneum]. / Le péritoine << témoin >> de la pathologie abdomino-pelvienne.

Most inflammatory, infectious or tumoral diseases of the bowel and abdominal organs may secondarily involve the peritoneum which acts as a mirror of the diseases. Multidetector CT allows breathhold acquisitions through the abdomen and pelvis providing high spatial and contrast resolution imaging at all phases of contrast distribution as well as MPR and 3D capabilities.

[Imaging of complications of Meckel diverticulum]. / Imagerie des complications du diverticule de Meckel.

Meckel's diverticulum is a persistent embryonic remnant occurring in 2% of the general population. As an "ileal appendix", it is usually clinically silent and only discovered at the time of complications: inflammation, hemorrhage, obstruction, tumor. The preoperative diagnosis is rarely made because of the non specific nature of the symptomatology and only about 10% of complicated cases are diagnosed at imaging. Complications from Meckel's diverticulum should always be considered in patients presenting with an acute abdomen, especially in young adults.