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Turtleback sign

Dr Daniel J Bell and Dr Bruno Di Muzio et al.

Turtleback sign, also known as tortoise shell appearance, represents a characteristic appearance of chronic hepatic schistosomiasis in which liver margins are irregular and nodular. Dystrophic calcifications within a polygonal network of fibrous septa are seen in the periphery, often perpendicular to the liver capsule, resembling the turtle's carapace. It is considered pathognomonic for hepatic schistosomiasis due to Schistosoma japonicum and Schistosoma mansoni 2.

Inspired signs

Article information

rID: 47953
Section: Signs
Synonyms or Alternate Spellings:
  • Tortoise shell sign
  • Turtle-shell appearance
  • Turtleback liver
  • Turtle-back liver
  • Tortoise shell appearance

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Cases and figures

  • Figure 1: turtleback (photo)
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