Letter: Sacrococcygeal teratoma and "non-immunological" hydrops fetalis.

Thymic teratoma presenting as non-immune hydrops fetalis

Teratomas are one of the most frequent tumors in the pediatric population. They occur anywhere along the midline of the body, following the course of the embryonic germ cell ridge. In the mediastinal location, they exert space occupying effects, leading to a myriad of complications, including non-immune hydrops fetalis. We describe a fatal case of an immature thymic teratoma in a neonate presen...

[Non-immunologic hydrops fetalis].

Non-immune hydrops fetalis

Non immune hydrops fetalis.

With the decline in the frequency of rhesus isoimmunisation, hydrops fetalis secondary to other factors is becoming increasingly recognised. We describe a case in association with chorioangioma of the placenta. The causes of non immune hydrops are reviewed and the problems of management discussed.

SACROCOCCYGEAL TERATOMA

31 cases of sacrococcygeal teratoma from the Children's Hospital of Ziirich and 25 cases from the Children's Hospital of Tehran are evaluated and compared. In seven cases the tumors were organized. They contained parts of organs or rudimentary extremities. According to general experience the malignancy of tumors is higher in children who are operated on after their second to fourth month o...