BACKGROUND: @entity80 are benign, non-neoplastic, highly vascular @entity79 . The purpose of this study was to describe the prevalence, the clinical presentation, and the recurrence rate of @entity80 and sacrum and to examine the diagnostic and therapeutic options and prognosis for @entity1 with this condition. METHODS: Forty consecutive @entity1 with an @entity80 were treated from 1921 to 1996. Their medical records and radiographic and imaging studies were reviewed, and histological sections from the cysts were examined. Seventeen lesions were iliosacral, sixteen were acetabular, and seven were ischiopubic. Seven involved the hip joint, and two involved the sacroiliac joint. All twelve sacral lesions extended to more than one sacral segment and were associated with neurological signs and symptoms. @entity75 were associated with pathological @entity174 in five @entity1 and with medial migration of the femoral head, @entity572 , and @entity572 in one @entity1 each. The mean duration of follow-up was thirteen years (range, three to fifty-three years). RESULTS: Thirty-five @entity1 who were initially treated for a @entity75 had surgical treatment (twenty-one had excision-curettage and fourteen had intralesional excision); two @entity1 also had adjuvant radiation therapy. Of the thirty-five @entity1 , five (14%) had a local recurrence noted less than eighteen months after the operation. Of five @entity1 initially treated for a recurrent lesion, one had a local recurrence. At the latest follow-up examination, all forty @entity1 were disease-free and twenty-eight (70%) were asymptomatic. There were two deep infections. CONCLUSION: @entity80 and sacrum are usually aggressive lesions associated with substantial @entity79 , @entity174 , and local recurrence. Current management recommendations include preoperative selective arterial embolization, excision-curettage, and bone-grafting.

Treatment of XXXX and sacrum.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fracture', 'pathological fractures'] @entity75 :: ('MESH:D001927', 'Disease') :: ['primary lesion', 'Destructive acetabular lesions'] @entity79 :: ('MESH:D001847', 'Disease') :: ['bone destruction', 'bone lesions'] @entity80 :: ('MESH:D017824', 'Disease') :: ['aneurysmal bone cyst of the pelvis and/or sacrum', 'Aneurysmal bone cysts of the pelvis', 'aneurysmal bone cysts of the pelvis', 'Aneurysmal bone cysts'] @entity572 :: ('MESH:D006617', 'Disease') :: ['hip dislocation', 'hip subluxation']
@entity80 :: (MESH:D017824,Disease) :: ['aneurysmal bone cysts of the pelvis']
