[Hepatic mesenchimal hamartoma in neonates]. / Hamartoma mesenquimal hepático no recém-nascido.

OBJECTIVES: To approach the diagnosis and management of two different features of hepatic mesenchymal hamartoma (HMH) in the neonate. METHODS: Report of two cases of HMH in newborns and review of the literature (MEDLINE and LILACS). RESULTS: Two cases of newborns with huge abdominal masses are presented, one of them complicated by rupture and hemorrhage during ultrasound manipulation, leading to hypovolemic shock. Urgent operation showed a ruptured giant hepatic cyst containing hemorrhagic yellowish fluid. The cyst was removed by edge resection at the level of hepatic segment 6 and the postoperative period was uneventful. The pathological analysis of the cyst including immunohistochemical tests revealed HMH. In case 2, with prenatal diagnosis of hepatic tumor, the mass progressively enlarged after birth, and a left hepatectomy was performed. The macroscopic appearance suggested hemangioma but the histopathological aspect indicated mesenchymal hamartoma with endothelial predominance. Nowadays both children are healthy and asymptomatic. CONCLUSIONS: The management of HMH is surgical treatment, because it does not disappear spontaneously. Some cases evolve to giant forms even in the neonatal period leading to fatal complications. Preoperative differential diagnosis from hemangioma is quite difficult for cystic types, and immunohistochemical analysis is important for pathological confirmation.

[Abdominal cystic lymphangioma in childhood: report of eight cases]. / Linfangioma abdominal na criança: apresentação de oito casos.

Lymphangioma is a common pathology in children, however intra-abdominal cystic lymphangioma is rare. Morphology and clinical symptoms are variable and can be mixed up with other etiology. Ultrasound can make the diagnosis in the majority of the cases. Surgery is the best choice of treatment and prognosis is in general good. Authors present eight cases in a period of fifteen years, all of them treated surgically. Results were good in seven cases. One late death was observed.

[Giant epignathus in the newborn: report of a case and review of the literature]. / Epignathus gigante no recém nascido: relato de um caso e revisão da literatura.

Epignathus is a congenital teratoide tumor in the oral cavity. It is extremely rare and usually lethal. The authors present a case treated successfully. Important aspects of the diagnosis, clinical management and surgical procedures are discussed. Extensive review of the literature is presented.