Headache & Pain
Primary cough headache
Aug. 12, 2023
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Two-dimensional ultrasound images at 17 weeks of gestation. Absence of vertebral posterior elements with splaying of the lamina at the thoracic level (white arrowhead). (Source: Sugiura T, Sato Y, Nakanami N, Tsukimori K. Prenatal sonographic image of sirenomelia with anencephaly and craniorachischisis totalis. Case Rep Obstet Gynecol 2018;2018:7058253. Creative Commons Attribution [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)