We present two cases of hypoaesthesia over the dorsal radial aspect of the hand with an associated painful mass in the wrist. At operation a dorsal wrist ganglion was compressing the superficial branch of the radial nerve at the anatomical snuff-box. After removal of the ganglion the hypoaesthesia was relieved.

We report a case of true aneurysm of the ulnar digital artery, the aetiology of which was related to gripping a golf club. It was diagnosed preoperatively by magnetic resonance imaging. The patient made a good recovery from excision, and the aneurysm had not recurred two years later.

UNLABELLED This article presents a case of ulnar nerve compression at the Guyon's canal caused by a true aneurysm of the ulnar artery secondary to blunt trauma. The duration of follow-up was one year. SETTING Hospitalized care. A 27-year-old man who worked in an office fell on to a gravel path landing on his out-stretched right hand. Decompression of the ulnar nerve was made by simple ligation of the damaged artery and resection of aneurysm. MEASURES Histological examination. The sensory symptoms disappeared two days after the operation. At one year after surgery, the patient was completely asymptomatic. There was no residual cold intolerance. Simple ligation of the damaged artery and resection of aneurysm resulted satisfactory. It seemed to be a safe method in this case. Ulnar nerve compression due to a true aneurysm of the ulnar artery in the Guyon's canal is rarely described in the literature.

We describe the case of a 75-year-old woman with adventitial cystic degeneration of the great saphenous vein. Involvement of the great saphenous vein has been unreported previously. Intravenous cysts containing mucinous material were found in the great saphenous vein. Histopathologic examination revealed mucus-filled cysts in the adventitia of the vein, and myxomatous degeneration of the adventitial connective tissue was found.