I'm sorry for any confusion, but "Poland" is not a medical term. It is a country in Central Europe. If you have any questions about medical conditions or terminology, I would be happy to help answer those!

Poland Syndrome is a rare congenital anomaly characterized by the absence or underdevelopment of the chest muscle (pectoralis major) on one side of the body, often associated with webbing or absence of the fingers (cutaneous syndactyly) and shortening of the arm on the same side. It was first described by Alfred Poland, a British surgeon, in 1841. The exact cause of this condition is not known, but it is believed to be due to an interruption of blood flow to the developing fetus during early pregnancy. Treatment typically involves reconstructive surgery and physical therapy.

Eastern Europe is a geographical and political region of the European continent. The exact definition of Eastern Europe varies, but it generally includes the countries in Central and Eastern Europe that were part of the Soviet Union or aligned with the Soviet Union during the Cold War. These countries include:

* Belarus
* Bulgaria
* Czech Republic
* Hungary
* Moldova
* Poland
* Romania
* Russia (European portion)
* Slovakia
* Ukraine

Some definitions of Eastern Europe also include the Baltic states (Estonia, Latvia, and Lithuania), which were part of the Soviet Union but are now independent countries. Other definitions may also include Albania, Bosnia and Herzegovina, Croatia, Montenegro, North Macedonia, Serbia, and Slovenia, which were part of the Eastern Bloc but not part of the Soviet Union.

It is important to note that the term "Eastern Europe" can be seen as problematic and outdated, as it is often associated with negative stereotypes and historical connotations from the Cold War era. Many people prefer to use more specific terms, such as "Central Europe," "Eastern Bloc," or "Soviet Union," to describe the region.

I'm afraid there seems to be a misunderstanding. "Socialism" is a political and economic theory that advocates for the means of production, distribution, and exchange to be owned or regulated by the community as a whole, typically through a democratic government. It is not a medical term. If you have any questions related to medicine or health, I would be happy to try to help answer them!