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A case of mesenteric lipoma presenting as an isolated abdominal masse in a boy of 20 months is reported. Diagnosis was made from the appearance of the fatty mass in a straight abdominal film. Radiological examination was completed by urography and echotomography. The analysis of 11 identical cases found in the literature enabled the principal clinical and radiological characterists of this affection to be defined and evoked the problems of differential diagnosis from other lipomatous abdominal masses and cystic lymphangioma.

The authors report the case of a 30-year-old man suffering from juvenile laryngeal papillomatosis, recurrent since the age of 4. 23 years later, multiple round opacities were found in the lungs, progressing slowly to excavation. Bronchoscopy with broncho-aspiration provided histological confirmation of the diagnosis of broncho-alveolar spread of the papillomatosis, made on the basis of plain films and tomography.

The authors review 69 cases of infections due to mycoplasma pneumoniae in children, including the clinical, biological, and radiological aspects, and compare their results with those in the published literature. Clinical and radiological signs and non-specific, and diagnosis is made exclusively by serological tests.

On the basis of 18 personal cases, the authors discuss the different radiological appearances of tumours of the ampulla of Vater region. After a review of the histopathological aspects, they attempt to separate the respective indications for the various endoscopic and radiological studies possible, stressing the importance of duodenoscopy. They give an illustrated classification of the different appearances seen.