Editing Spleen (section)

=== Accessory spleen ===
An [[accessory spleen]] is a small splenic nodule extra to the spleen usually formed in early [[human embryogenesis|embryogenesis]]. Accessory spleens are found in approximately 10 percent of the population<ref name=klmoore>{{cite book | last = Moore | first = Keith L. | author-link = Keith L. Moore | title = Clinically Oriented Anatomy | edition = 3rd | year = 1992 | publisher = Williams & Wilkins | location = Baltimore | isbn = 978-0-683-06133-8 | page = 187}}</ref> and are typically around 1 centimeter in diameter. ''[[Splenosis]]'' is a condition where displaced pieces of splenic tissue (often following [[physical trauma|trauma]] or splenectomy) [[autotransplantation|autotransplant]] in the abdominal cavity as accessory spleens.<ref>{{cite journal | author = Abu Hilal M |author2=Harb A|author3=Zeidan B|author4=Steadman B|author5=Primrose JN|author6= Pearce NW | date = January 5, 2009 | title = Hepatic splenosis mimicking HCC in a patient with hepatitis C liver cirrhosis and mildly raised alpha feto protein; the important role of explorative laparoscopy | journal = World Journal of Surgical Oncology | volume = 7 | issue = 1 | pmid = 19123935 | pmc = 2630926 | doi = 10.1186/1477-7819-7-1
| page = 1 |doi-access=free }}</ref>

[[Polysplenia]] is a congenital disease manifested by multiple small accessory spleens,<ref>{{DorlandsDict|seven/000085247|polysplenia}}</ref> rather than a single, full-sized, normal spleen.  Polysplenia sometimes occurs alone, but it is often accompanied by other developmental abnormalities such as [[intestinal malrotation]] or [[biliary atresia]], or cardiac abnormalities, such as [[dextrocardia]]. These accessory spleens are non-functional.