Five cases of spontaneous thrombosis of a palmar digital vein are pres
ented. The patients, all female, complained of a tender and unsightly
lump over the digital palmar surface at the proximal interphalangeal j
oint level. Two fingers were affected in one patient. None could recal
l any history of trauma. In four cases a surgical excision was carried
out. Histology confirmed the intraoperative findings of thrombosis of
a superficial digital vein in every case. All patients are free from
recurrence at a mean follow-up of 2.5 years.