Mesenteric panniculitis is a rare disease of the adipose tissue of mesenter
y. Ascites is an unusual presentation. We report a case of panniculitis who
se initial presentation was an obesity-hypoventilation syndrome with pulmon
ary hypertension. Respiratory disorders were related to abundant ascites. P
anniculitis cure and ascites disappearance allowed return to normal pulmona
ry function and pulmonary artery pressure.