[Castleman's disease with thoracic localization. Apropos of a case with x-ray computed tomography. Review of the literature]. / Maladie de Castleman à localisation thoracique. A propos d'un cas avec examen tomodensitométrique. Revue de la littérature.

Castleman Disease is a rare benign condition of uncertain etiopathogeny. The most frequent localization is thoracic, often discovered by a routine chest radiography. The diagnosis is histological. We report one case, characterized by his very long course (25 years) and calcifications. Ct scanning showed enhancement after contrast material administration, and proved the adherence with the adjacent soft tissues, justifying surgery.

[Pseudotumoral xanthogranulomatous pyelonephritis. Apropos of a case]. / Pyélonéphrite xanthogranulomateuse pseudo-tumorale. A propos d'un cas.

Xanthogranulomatous pyelonephritis may, rarely, occur as a renal tumour syndrome (simulating mainly a renal cell carcinoma). We report one case. The diagnosis is often difficult (even with surgical findings) and frequently a histological surprise. This points out the importance of identifying it in preoperative staging; the diagnosis may be suggested by the association of chronic pyelonephritis, renal stones and hypovascular renal tumour syndrome without specificity at sonography and CT.