Parapagus Twins Radiograph

Conjoined twins are categorized based on point where there body are joined.  Parapagus: Fused side-by-side with a shared pelvis. Twins that are dithoracic parapagus are fused at the abdomen and pelvis, but not the thorax. Twins that are diprosopic parapagus have one trunk and dicephalic.

Image from Imaging in the Preoperative Assessment of Conjoined Twins

 Parapagus twins aged 1 day. Anteroposterior plain radiograph shows separate crania; the spinal cords converge at a single fused pelvis. Cardiac and liver shadows bridge the midline.

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