“Lady with an Ermine” (1489–1490) is an oil on walnut portrait by the Italian artist Leonardo da Vinci. The portrait’s subject is Cecilia Gallerani, the favorite mistress of Ludovico Sforza, known as “il Moro”, Duke of Milan. It was painted around the time of Cecilia’s pregnancy with Ludovico’s illegitimate son. Leonardo’s paintings are famous for hiding mysteries; thus, the truth about the “Lady with an Ermine” is still unclear. However, the solution to this enigma could be more evident than expected. Our hypothesis is that Cecilia might have suffered from pregnancy-induced Cushing syndrome.

中文翻译：

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莱昂纳多·达·芬奇：带着貂皮谜团的女士

“带貂的女士”（1489-1490）是意大利艺术家达芬奇的胡桃油肖像。这幅肖像的主题是塞西莉亚·加莱拉尼，她是米兰公爵卢多维科·斯福尔扎最喜欢的情妇，人称“伊尔·莫罗”。它是在塞西莉亚和卢多维科的私生子怀孕时画的。莱昂纳多的画作以隐藏奥秘而闻名；因此，关于“带貂的女士”的真相仍然不清楚。然而，这个谜团的解决方案可能比预期的更明显。我们的假设是塞西莉亚可能患有妊娠引起的库欣综合征。