Asplenia is a syndrome characterized by absence of the spleen with two right lungs, a midline liver, and GI and urinary anomalies. Which term names this syndrome?

• A. Asplenia
• B. Polysplenia
• C. Dextrocardia
• D. Situs inversus

Answer: (A)

Right–left body pattern anomalies (heterotaxy) can produce isomerism, where the body mimics one side on both sides. When the spleen is absent and there are bilateral right‑sided features—such as two right lungs and a midline liver—with GI and urinary anomalies, this pattern is called asplenia. So the term that names this specific syndrome is asplenia. Polysplenia involves multiple spleens and left‑sided features rather than an absent spleen; dextrocardia is the heart positioned on the right, and situs inversus is a complete mirror image of normal organ arrangement, not just absence of the spleen.