[Adrenal cysts in the newborn. Apropos of 2 cases].

Cysts of the adrenal gland are very rare in the neonatal period and are always diagnosed either at surgery or at autopsy. Two patients are reported. One is an infant born at term in whom a mass in the left loin was discovered on the 3rd day of life. At surgery a suprarenal tumour was discovered and a polycystic adrenal was removed: recovery was uneventful. Histology showed a cystic haemangioma in the adrenocortical tissue. The diagnosis made was that of a cystic haemangioma. The other patient is an infant born at 38 weeks gestation who became jaundiced and developed a haemolytic streptococcal septicaemia. A mass was found in the right lumbar region on the 3rd day. The calcified egg-shell appearance, renal arteriography and an intravenous pyelogram demonstrated the cystic appearance of the adrenal. The cystic mass and the adrenal gland were removed and the patient recovered. Histological examination suggested that a pseudocyst had arisen secondary to a haemorrhagic infarct caused by a septic embolus. Adrenal cysts are classified as true cysts and pseudocysts (which must be distinguished from unilateral haematomas). The histological appearances are reviewed. These patients may be added to the 11 neonatal case reports in the literature (9 haemorrhagic pseudocysts, only 2 true cysts). To our knowledge cystic haemangioma has not previously been reported.