title: Spontaneous and enormous, chronic expanding hematoma of the lumbar region: a case report.
abstract: BACKGROUND
  Chronic expanding haematoma (CEH) is a very infrequent event with imprecise developmental mechanism and is rarely reported in literature.
  
  
  METHODS
  We present a case of enormous and spontaneous chronic haematoma of the back, expanded from the lower thoracic area to the sacral area, in a young patient without any history of trauma or chronic coagulopathy.
  
  
  CONCLUSIONS
  The MRI scan is very useful in preoperative diagnosis, however only the histopathological examination is able to perform the differential diagnosis with soft tissue tumors. Careful surgical treatment is important to minimize the haematoma recurrence.
authors.affiliation: Department of Orthopaedic and Traumatology, University Hospital of Heraklion, 71110, Crete, Greece.
authors.forename: Dritan
authors.initials: D
authors.lastname: Pasku
authors.forename: Artan
authors.initials: A
authors.lastname: Bano
authors.forename: Eleni
authors.initials: E
authors.lastname: Lagoudaki
authors.forename: Kalliopi
authors.initials: K
authors.lastname: Alpantaki
authors.forename: Pavlos
authors.initials: P
authors.lastname: Katonis