Paraneoplastic palmar fasciitis and polyarthritis syndrome

Palmar fasciitis and polyarthritis syndrome is a rare paraneoplastic syndrome that has been reported mainly for ovarian cancers. It is thought to be a tumour-associated autoimmune disorder. It is associated with polyarthritis and rapid flexion contractures of hands with palmar nodules due to palmar fasciitis. Similar paraneoplastic features in gastric cancers have seldom been reported. Here, I am reporting a case of paraneoplastic syndrome of metastatic gastric adenocarcinoma with polyarthritis of hands and contractures of multiple joints with asymmetric clubbing (right hand more than left hand) and hyperpigmentation over back of hands and fingers. Hyperpigmentation and asymmetric clubbing have not been reported in literature in palmar fasciitis and polyarthritis syndrome.