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In normal fetuses, the CSP and CM should be visible on transabdominal sonography between 16 and 38 weeks' menstrual age. Because abnormalities in these cranial structures may be indicative of central nervous system malformations, the availability of mean sonographic measurements from normal fetuses should be helpful in determining the need for additional testing in fetuses with abnormal measurements.

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We report the first case ofextracranial tuberculous lymphadenitis which paradoxically developed during treatment of intracranial tuberculoma. Our patient, a 15-year-old girl who initially presented with meningitis and intracranial tuberculomas, developed extracranial tuberculomas during treatment for central nervous system tuberculosis. She was followed clinically with cerebrospinal fluid (CSF) studies and magnetic resonance imaging (MRI) at three monthly intervals. Within 18 months of specific antituberculous treatment, the patient had fully recovered. The course and response to therapy are discussed in light of the current literature.