British Journal of Urology (1998), 82, 763–764

CASE RE PORT

Renal haemangioma presenting as an abdominal massin a neonateS.Z. Z AIDI , Y. MOR, I. S CHEIMBERG*, G.F. QUIMBY and P.D.E. MOURIQUANDDepartment of Urology and *Histopathology, Great Ormond Street Hospital For Children, London, UK

Case report

A 1-day-old male infant was admitted with a right renalmass after an uneventful pregnancy and normal delivery.Ultrasonography of the fetus at 14 and 28 weeks showedno abnormality; on admission he was normotensive.Preoperative investigations included ultrasonography,showing a solid mass in the right kidney, and normalurinary levels of homovanillic and vanillyl mandelic acid.On day 3 the child underwent a right nephrectomy andmade an uneventful recovery. The kidney specimenweighed 129.4 g (expected weight 24 g) and on sectioning(Fig. 1) most of the kidney was replaced by a smooth, haem-orrhagic, multilobulated tumour. Microscopy showed ahighly cellular tumour composed of oval cells and a

Fig. 2. Immunocytochemical stain for vascular markers (JC70)prominent vascular pattern with marked haemorrhage; highlights both branching small blood vessels and endothelial cellsthere were normal mitoses. Entrapped mature tubules were with a central lumen. ×200.seen within the tumour. Immunocytochemical stains forvascular markers (Fig. 2), Ulex europeaus agglutinin and

multicystic dysplastic kidney, when the mass is cystic,JC70, were extensively positive [1].

or renal vein thrombosis, infantile polycystic kidney ortumour when ultrasonography shows a solid structure.

Comment Renal tumours are extremely rare in this age group andinclude congenital mesoblastic nephroma, Wilms’

A renal mass in a neonate usually represents a benigntumour, neuroblastoma and teratoma [2]. Renal hae-

lesion. Possible aetiologies include hydronephrosis ormangiomas may be part of a congenital disorder, as inKlippel-Trenuanay Syndrome, characterized by softtissue and bony hypertrophy, varicose veins and port-wine haemangiomas. Ultrasonography can help indiagnosing renal involvement in such cases. However,they are generally seen as isolated lesions, usually soli-tary and unilateral and seldom clinically manifest before20 years of age. The age range for patients with thisentity is 4 months to 78 years [3]. To our knowledge,there is no reported case of a renal haemangioma in anewborn and this diagnosis should be considered whenfaced with a renal mass in a neonate.

References

1 Parums DV, Cordell JL, Micklem K et al. JC70: A newmonoclonal antibody that detects vascular endotheliumassociated antigen on routinely processed tissue. J Clin PatholFig. 1. Macroscopic section of the kidney showing almost complete

replacement by a smooth haemorrhagic multilobulated tumour. 1990; 43: 752–7

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764 CASE REPORTS

2 Woodard JR, Gosalbez R. Neonatal and perinatal emerg- Authorsencies. In Walsh PC, Retik AB, Stamey TA, Vaughan ED, S.Z. Zaidi, FRCS, Senior Registrar.eds, Campbell’s Urology, 6th edn, Vol. II. Philadelphia: Y. Mor, MD, Senior Registrar.Saunders, 1992: 1595–99 I. Scheimberg, MD, MRCPath, Senior Registrar.

3 Jahn H, Nissen HM. Haemangioma of the urinary tract: G.F. Quimby, MD, Senior Registrar.review of the literature. Br J Urol 1991; 68: 113–7 P.D.E. Mouriquand, MD, FEBU, Consultant.

Correspondence: Mr S.Z. Zaidi,Consultant Urologist, The Kidney Centre, 197/9 RafiquiShaheed Road, Karachi 75530, Pakistan.

© 1998 British Journal of Urology 82, 763–764