Fetus in fetu is a rare developmental abnormality in which a mass of tissue resembling a fetus forms inside the body of its twin.

There are two hypotheses for the origin of a "fetus in fetu". One hypothesis is that the mass begins as a normal fetus but becomes enveloped inside its twin. The other hypothesis is that the mass is a highly developed teratoma.

The anomaly was first defined in early nineteenth century by Meckel. Despite its prevalence among infants and children, there have been reports of cases in which the anomaly had remained asymptomatic until later ages. This rare congenital anomaly was reported around 100 times since its first definition in the nineteenth century.
#医学生Medic[超话]##medicaltalks#

今日所闻：
What can be said in New Year rhymes
That's not been said a thousand times?
We rise up laughing with the light
We lie down weeping with the night
We laugh, we weep, we hope, we fear
And that's the burden of a year.
又一年来到，该吟诵些什么？
除了那重复千百遍的，陈词旧歌
我们曾站在光里，欢笑过
也曾于黑夜入眠，哭泣过
我们笑了，我们哭了，我们怀揣着希望，也恐惧着
这便是沉甸甸的一年，我们背负过

- 《The Year》节选

#钢琴教学辅助教材[超话]#《彩色键盘图解-音阶和弦琶音》澳大利亚的塞西莉有着四十五年以上的钢琴教学经历。她采用“彩色键盘”这一独特的方式来帮助学生快速记忆音阶、和弦和琶音。在这本书的指导下，家长即使未受过音乐方面的训练，也可以自信地帮助孩子逐步提高演奏技巧。

With over forty-five years of piano teaching experience, Cecily uses a unique system of coloured key patterns to help students easily memorize scales, chords and arpeggios. Using the colourful guide, parents with no musical training can confidently assist young students through every stage of their technical development.