Mesenchymal hamartoma of the chest wall in infancy - Case report SUMMARY We present the case of the chest wall tumor in children that was diagnosed and treated in NHP, Hanoi. The child aged 6 month old which was attended to hospital with an asymptomatic chest-wall mass. The child was examined by chest X ray, thoracic CT scanner and MRI. Biopsy of the tumor revealed the diagnosis of mesenchymal hamartoma of the chest wall.

Pierre Robin syndrome. Study case SUMMARY Pierre Robin (PRS) is considered as rare frequency among fetal malformations. It presents with a classic triad of micrognathia, glossoptosis and cleft palate which is presenting the maxillo-facial CT fi nding. This typical PRS case is describing together with a short literature review about all CT anormaly images for diagnosis and express its performance. Keywords : Cleft palate, feeding plate, micrognathia, palatal feeding obturator, Pierre Robin sequence.

Synovial Lipomatosis (Lipoma arborescens) of the knees - case report SUMMARY Synovial Lipomatosis is a rare benign that can present with monoarticular or polyarticular involvement of joints such as knees, ankles, hips, shoulders, and elbows [5]. We describe a case in a 29-year-old man who presented with prolonged pain and swelling of the bilateral knee joints for the previous 20 years. Plain radiograph usually shows joint fullness and osteoarthritic changes. MRI show a thickening of the synovium that has the characteristic features of fat and joint effusion of the bilateral knee joints. Therefore, the patient was underwent synovectomy, which revealed a diffuse yellow soft tissue synovial papillary growth from synovial pouch. The pathology was synovial lipomatosis. This is the first case of Viet Duc Hospital. It is also termed as villous lipomatous proliferation of the synovium or lipoma arborescens, diffuse lipoma of the joint, diffuse synovial lipoma, diffuse articular lipomatosis, fatty infiltration of the synovial membrane, villous lipomatous proliferation of the synovial membrane [8]. Key words: Synovial Lipomatosis, knees.