title: [An adrenal neuroblastoma regression diagnosed and followed by ultrasound: a case report].
abstract: Neuroblastoma is an embryonal tumor of the sympathetic nervous system, arising during fetal or early post-natal life from sympathetic cells derived from the neural crest. A 9-day-old boy was diagnosed as adrenal neuroblastoma with liver metastasis by biopsy. After 6 years of follow-up with ultrasound observation, the boy presents a process of spontaneous recovery without any special treatment. Spontaneous regression of cancer is defined as the decrease in size or disappearance of a primary tumor or metastatic disease without therapeutic intervention. Neuroblastoma is known to show the highest rate of spontaneous regression among malignant tumors. A better understanding of the mechanisms for spontaneous regression might help to identify optimal therapeutic approaches for patients with these tumors.
authors.affiliation: Department of Ultrasound, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou 570000, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Tian
authors.affiliation: Department of Ultrasound, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou 570000, China.
authors.forename: Lie
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Ultrasound, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou 570000, China.
authors.forename: Caiyi
authors.initials: C
authors.lastname: Zhu
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis; D001706:Biopsy; D002648:Child; D006801:Humans; D007231:Infant, Newborn; D008113:Liver Neoplasms / Q000175:diagnosis / Q000556:secondary; D008297:Male; D009447:Neuroblastoma / Q000175:diagnosis*; D012075:Remission, Spontaneous; D014463:Ultrasonography