Editing Angiosarcoma (section)

==== Primary cardiac angiosarcoma ====
Primary cardiac angiosarcoma is an angiosarcoma that arises in the [[heart]]. Despite being very rare they are the most common malignant [[Primary tumors of the heart|primary heart tumor]] with 10–25%<ref name=":2">{{Cite journal|last1=Patel|first1=Swetal Dilip|last2=Peterson|first2=Ashley|last3=Bartczak|first3=Artur|last4=Lee|first4=Sarah|last5=Chojnowski|first5=Sławomir|last6=Gajewski|first6=Piotr|last7=Loukas|first7=Marios|date=2014|title=Primary cardiac angiosarcoma – a review|journal=Medical Science Monitor|language=en|volume=20|pages=103–109|doi=10.12659/MSM.889875|pmid=24452054|pmc=3907509}}</ref><ref name="Angiosarcoma" /> of cases being angiosarcomas. Symptoms may include shortness of breath, chest pain (46%<ref name=":2" />), [[hypotension]] and [[Syncope (medicine)|syncope]]. [[Superior vena cava syndrome]] is reportedly a [[Complication (medicine)|complication]] of cardiac angiosarcoma.<ref name="headtotoe" /> Due to the non-specificity of symptoms and rarity of the disease it is often missed by doctors and initial diagnosis may be delayed. A 2012 study reported that 56% of patients presented with [[pericardial effusion]] with or without [[cardiac tamponade]].<ref name=":2" /> The most common finding on [[Medical imaging|imaging]] is [[cardiomegaly]]. Prognosis is generally very poor with a mean survival rate of three months to four years following diagnosis.<ref name="headtotoe" /> Metastasis at time of diagnosis is common.<ref name=":2" />