7'(! 1 ~ 2001
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Spontaneous Regression of Liver Metastasis in Stage
N-S
Neuroblastoma after Adrenalectomy - Case Report -Hak Jun Seo, M.D., Jae Hee Jung, M.D., Young Tack Song, M.D.
Department of Surgery, St, Mary's Hospital, The Catholic University of Korea Seoul, Korea
Prenatally diagnosed neuroblastomas have been reported in increasing numbers over the past several years. The vast majority are in favorable stages of the disease (stage I ,II ,N-S).
The authors experienced one case of stage N-S neuroblastoma of the adrenal gland with liver metastasis, which regressed spontaneously after removal by adrenalectomy. This patient was noticed to have an abdominal mass at prenatal ultrasonography performed at 36weeks of gestation. This tumor was a neuroblastoma of the left adrenal gland with multiple liver metastases. Left adrenalectomy and liver biopsy were performed at 3 months of age.
Thirty-eight months after surgery, an MRI demonstrated that the hepatic metastatic lesions had completely regressed without chemotherapy or radiation. (J Kor Assoc Pecliatr Surg 7(1):68-72, 2(01)
Index Words: Neuroblastoma, Prenatal diagnosis, Stage IV-S, Spontaneous regression
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Fig. 3. Microscopic findings (H & E, x 100). The tumor celis (T) are separated by fibrous septum from normal hepatocytes (N). Tumor is composed of small round celis, hyperchromatic and rosette formation.
Fig. 4. MRI of the abdomen 38months after operation, showing complete disappearance of the previous lesions (T2 weighted image).
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I. Bader JL, Miller RW: Cancer incidence and mortality in the first year of life. AJDC 13 3:157-159, 1979 2. Granata C, Fagnani AM, Gambini C, Boglino C,
Bagnulo S, Cecchetto G, Federici S, I nserra A, Michelazzi A, Riccipetitoni G, Rizzo A, Tamaro P, Jasonni V, De Bernardi B: Features and outcome of neuroblastoma detected before birth. J Pediatr Surg
35:88 -91, 2000
3_ Evans AE, Baum E, Chard R: Do infants with stage IV-S neuroblastoma need treatment? Arch Dis Child 56:271-274, 1981
4. Evans AE, Chatten J, D'Angio OJ, Gerson JM, Robinson J, Schnaufer L: A review of 17 /V-S neuro- blastoma patients at the Children's Hospital of Philadel- phia. Cancer 45:8 33-839, 1980
5. Acharya S, Jayabose S, Kogan SJ, Tugal 0, Beneck D, Leslie D, Slim M : Prenatally diagnosed neurobla- stoma. Cancer 80(2):304-310, 1997
6. Smith EI, Castleberry RP: Neuroblastoma. Curr Probl Surg 27:579, 1990
7. Schwartz SI, Shires GT, Spnecer FC, Husser WC: The pituitmy and adrenal glands(chap.35), Principles of Sur- ge/y(ed 6), New York, McGraw-Hill, 1994, P 1593 8. Grosfeld lL, Baehner RL: Neuroblastoma : An analysis
of 160 cases, World J Surg 4(1):29-37, 1980
9. Nesbit ME: Advances and management of solid tumors in children, JNCI 76:2, 1986
10. Bessho F, Hashizume K, Nakajo T, Kamoshita S: Mass screening in Japan increased the detection of infants with neuroblastoma without a decrease in cases in older children. J Pediatr 119(2):237-241, 1991
II. Fenart D, Deville A, Donzeau M, Bruneton IN: Retro- peritoneal neuroblastoma diagnosed in utero. J Radiol
64:359-361, 1983
12. Atkinson GO, Zaatari G,Lorenzo RL, Gay BB, Garvin AJ: Cystic neuroblastoma in infants: Radiographic and pathologic feature. AJR 146: 113-117, 1986
13. Taylor SR, Locker J: A comparative analysis of nuclear DNA content and N-myc gene amplification in neuro- blastoma. Cancer 65:1360-1366, 1990
14. Papac RJ: Spontaneous regression of cancer: possible mechanisms. In Vivo 12(6):571- 578, 1998
15. Schaefer JT, Barthlen W, Schweizer P: Ceramide in- duces apoptosis in neuroblastoma cell cultures resistant to CD95 (FasIAPO-l)-mediated apoptosis. J Pediatr Surg 35(3): 473- 479, 2000
16. Nakagawara A: Molecular basis of spontaneous regre- ssion of neourblastoma: role of neurotrophic signals and genetic abnormalities. Hum Cell 11 (3): 115-124, 1998 17. Grosfeld JL, Schatzlein M, Ballantine TVN, Weetman
RM, Baehner RL: Metastatic neuroblatoma: Factors influencing survival. J Pediatr Surg 13(1):59-65, 1978
18. Guglielmi M, Bernardi B, Rizzo A, Federici B, Boglino C, Siracusa F, Leggio A, Coz zi F, Cecchetto G, Musi L: Resection of primary tumor at diagnosis in stage IV-S neuroblastoma : Does it affect the clinical course?
J Clin Oneol 14(5):1537-1544, 1996
19. Suita S, Zaizen Y, Sera Y, Takamatsu H, Mizote H, Ogami H, Kurosaki N, Ueda H, Miyazaki S: Neuro- blastoma in infants aged less than 6 months: Is more aggressive treatment necessary? A report from the Pedi- atric Oncology Study Group of the Kyushu area. J Pediatr Surg 30(5):715-721, 1995
20. Kaneko M, lwakawa M, Ikebukuro K, Ohkawa H: Com- plete resection is not required in patients with neuro- blastoma under 1 year of age. J Pediatr Surg 33(11):
1690-1694, 1998