enostosis

{{short description|Small, hard nodule within the interior of a bone}}

{{For|the island|Bone Island}}

{{Infobox medical condition (new)

| name = {{PAGENAME}}

| synonyms = Bone island

| image = Osteopoikilie Haende.jpg

| alt =

| caption = Osteopoikilosis results in multiple enostoses.

| pronounce =

| field = orthopedic

| symptoms =

| complications =

| onset =

| duration =

| types =

| causes =

| risks =

| diagnosis =

| differential =

| prevention =

| treatment =

| medication =

| prognosis =

| frequency =

| deaths =

}}

An enostosis is a small area of compact bone within the cancellous bone.{{cite book|last1=Ingle|first1=John Ide|last2=Bakland|first2=Leif K.|title=Endodontics|date=2002|publisher=PMPH-USA|isbn=9781550091885|page=197|url=https://books.google.com/books?id=C_T3WQ-a1MMC&q=Enostosis|accessdate=23 November 2017|language=en}}{{cite book|last1=Davies|first1=A. Mark|last2=Sundaram|first2=Murali|last3=James|first3=Steven J.|title=Imaging of Bone Tumors and Tumor-Like Lesions: Techniques and Applications|date=2009|publisher=Springer Science & Business Media|isbn=9783540779841|page=253|url=https://books.google.com/books?id=aO_kOCnkBCAC&q=Enostosis|accessdate=23 November 2017|language=en}} They are commonly seen as an incidental finding on radiographs or CT scans. They are typically very small and do not cause any symptoms.{{cite book|last1=Mann|first1=Robert W.|last2=Hunt|first2=David R.|title=PHOTOGRAPHIC REGIONAL ATLAS OF BONE DISEASE: A Guide to Pathologic and Normal Variation in the Human Skeleton (3rd Ed.)|date=2013|publisher=Charles C Thomas Publisher|isbn=9780398088279|page=284|url=https://books.google.com/books?id=9lnDCAAAQBAJ&q=Enostosis+benign|accessdate=23 November 2017|language=en}} Their radiodensity is generally similar to cortical bone.[https://books.google.com/books?id=e3F4NaY3fgQC&pg=PA1900 Page 1900] in: {{cite book|title=Encyclopedia of Imaging, Volume 2|author=Albert L. Baert|publisher=Springer Science & Business Media|year=2008|isbn=9783540352785}} No treatment is necessary. Multiple enostoses are present in osteopoikilosis.{{cite book|last1=Algra|first1=Paul R.|last2=Valk|first2=Jaap|last3=Heimans|first3=Jan J.|title=Diagnosis and Therapy of Spinal Tumors|date=2013|publisher=Springer|isbn=9783642602542|page=96|url=https://books.google.com/books?id=jVXmCAAAQBAJ&q=Enostosis+osteopoikilosis|accessdate=23 November 2017|language=en}}