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Most of the patients are dead born, and the others die in a few hours. There are only six previously documented long-term survivors. In our case, our patient with iniencephalic signs and findings is still living. She is 2 years old now. We think that this patient presents a mild form of iniencephaly.

A mature cystic teratoma mimicking parietal encephalocele is extremely rare. Germ cell tumors should be kept in mind in the differential diagnosis of all midline lesions with unusual radiographic appearance. Cerebral venous angiography or MR angiography must be performed for the diagnosis and the surgical planning in lesions located near SSS.

Myelomeningocele presenting as a retromediastinal mass originating from the midline defect through the fused T-4, T-5, and T-6 VBs is described. An 11-year-old boy with a completely normal systemic and neurological examination suffering pulmonary problems such as effort dyspnea and severe kyphosis was evaluated and an anterior thoracic myelomeningocele was diagnosed. The boy underwent surgery for excision of the meningomyelocele sac and correction of kyphoscoliosis. His year-long follow-up period as an outpatient was uneventful. A comprehensive PubMed search of the literature returned no results for an "anterior thoracic myelomeningocele" query. To the best of the authors' knowledge, this is the only case described in the literature.

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