MR Imaging of Pediatric Bone Marrow
Abstract
This article reviews normal pediatric bone marrow (histologic composition, MR imaging appearance, normal marrow conversion), mimics of disease (heterogeneous red marrow, red marrow hyperplasia), and abnormal marrow (neoplastic replacement, treatment-related changes, edema-like marrow alterations).
The bone marrow is one of the largest organs in the body and is visible in every magnetic resonance (MR) imaging study. It is composed of a combination of hematopoietic red marrow and fatty yellow marrow, and its composition changes throughout life in response to normal maturation (red to yellow conversion) and stress (yellow to red reconversion). MR imaging is highly sensitive for detection of altered marrow signal intensity, and the T1-weighted spin-echo sequence provides the most robust contrast between yellow marrow and disease. Heterogeneous red marrow and red marrow hyperplasia can mimic marrow disease, but should be distinguished from neoplastic replacement (leukemia, lymphoma, primary bone sarcomas, hematogenous metastases) and expected posttreatment changes (radiation therapy, chemotherapy, colony-stimulating factor, bone marrow transplant). Nonneoplastic edema-like processes can also alter marrow signal intensity, including trauma, infection, inflammation (chronic recurrent multifocal osteomyelitis, juvenile inflammatory arthritis), altered biomechanics, and chronic regional pain syndrome. Unfortunately, MR imaging findings are often nonspecific and overlap among many of these vastly different causes. Therefore, a definitive diagnosis is reliant on a combination of imaging findings, clinical evaluation, laboratory assessment, and occasionally tissue analysis.
©RSNA, 2016
References
- 1. . Magnetic resonance imaging of diffuse bone marrow disease. Radiol Clin North Am 1993;31(2):383–409. Medline, Google Scholar
- 2. . Magnetic resonance imaging of the normal bone marrow. Skeletal Radiol 1998;27(9):471–483. Crossref, Medline, Google Scholar
- 3. . Normal gadolinium-enhanced MR images of the developing appendicular skeleton. II. Epiphyseal and metaphyseal marrow. AJR Am J Roentgenol 1997;169(1):191–196. Crossref, Medline, Google Scholar
- 4. . Pediatric bone marrow MR imaging. Magn Reson Imaging Clin N Am 2009;17(3):391–409, v. Crossref, Medline, Google Scholar
- 5. . Magnetic resonance imaging of bone marrow disease in children. Radiology 1984;151(3):715–718. Link, Google Scholar
- 6. . Which MRI sequence of the spine best reveals bone-marrow metastases of neuroblastoma? Pediatr Radiol 2005;35(8):778–785. Crossref, Medline, Google Scholar
- 7. . Value added: functional MR imaging in management of bone and soft tissue sarcomas. Curr Opin Oncol 2015;27(4):323–331. Crossref, Medline, Google Scholar
- 8. . Musculoskeletal tumors: how to use anatomic, functional, and metabolic MR techniques. Radiology 2012;265(2):340–356. Link, Google Scholar
- 9. . Research synthesis: what is the diagnostic performance of magnetic resonance imaging to discriminate benign from malignant vertebral compression fractures? Systematic review and meta-analysis. Spine 2012;37(12):E736–E744. Crossref, Medline, Google Scholar
- 10. . Chemical shift imaging: preliminary experience as an alternative sequence for defining the extent of a bone tumor. Quant Imaging Med Surg 2014;4(3):173–180. Medline, Google Scholar
- 11. . Differentiation of benign and malignant skeletal lesions with quantitative diffusion weighted MRI at 3T. Eur J Radiol 2015;84(6):1091–1097. Crossref, Medline, Google Scholar
- 12. . Diffusion-weighted MR imaging for characterizing musculoskeletal lesions. RadioGraphics 2014;34(5):1163–1177. Link, Google Scholar
- 13. . Diffusion-weighted imaging in pediatric body MR imaging: principles, technique, and emerging applications. RadioGraphics 2014;34(3):E73–E88. Link, Google Scholar
- 14. . Age-related distribution of vertebral bone-marrow diffusivity. Eur J Radiol 2012;81(12):4046–4049. Crossref, Medline, Google Scholar
- 15. . Study of single voxel 1H MR spectroscopy of bone tumors: differentiation of benign from malignant tumors. Eur J Radiol 2013;82(12):2124–2128. Crossref, Medline, Google Scholar
- 16. . Musculoskeletal tumors: use of proton MR spectroscopic imaging for characterization. J Magn Reson Imaging 2006;23(1):23–28. Crossref, Medline, Google Scholar
- 17. . Superparamagnetic iron oxide (SPIO) MRI contrast agent for bone marrow imaging: differentiating bone metastasis and osteomyelitis. Magn Reson Med Sci 2006;5(4):191–196. Crossref, Medline, Google Scholar
- 18. . The role of whole-body MRI in pediatric oncology. J Pediatr Hematol Oncol 2014; 36(5):342–352. Crossref, Medline, Google Scholar
- 19. . Whole-body MRI in children: current status and future applications. Eur J Radiol 2008;68(2):289–298. Crossref, Medline, Google Scholar
- 20. . Regional and whole-body imaging in pediatric oncology. Pediatr Radiol 2011;41(suppl 1):S186–S194. Crossref, Medline, Google Scholar
- 21. . Whole-body diffusion-weighted MR imaging in cancer: current status and research directions. Radiology 2011;261(3):700–718. Link, Google Scholar
- 22. . Whole-body MR imaging with the use of parallel imaging for detection of skeletal metastases in pediatric patients with small-cell neoplasms: comparison with skeletal scintigraphy and FDG PET/CT. Pediatr Radiol 2008;38(9):953–962. Crossref, Medline, Google Scholar
- 23. . Normal paediatric bone marrow: magnetic resonance imaging appearances from birth to 5 years. J Med Imaging Radiat Oncol 2013;57(3):283–291. Crossref, Medline, Google Scholar
- 24. . MR imaging insights into skeletal maturation: what is normal? Radiology 2009;250(1):28–38. Link, Google Scholar
- 25. . Epiphyseal marrow in infancy: MR imaging. Radiology 1991;180(3):809–812. Link, Google Scholar
- 26. . Regression of bone-marrow haemopoiesis from the terminal digits in the fœtus and infant. Br J Haematol 1964;10(4):485–489. Crossref, Medline, Google Scholar
- 27. . Sequence and rate of bone marrow conversion in the femora of children as seen on MR imaging: are accepted standards accurate? AJR Am J Roentgenol 1994;162(6):1399–1406. Crossref, Medline, Google Scholar
- 28. . Red and yellow marrow in the femur: age-related changes in appearance at MR imaging. Radiology 1990;175(1):219–223. Link, Google Scholar
- 29. . Quantitative histological studies on age changes in bone. J Pathol Bacteriol 1967;94(2):275–291. Crossref, Medline, Google Scholar
- 30. . Postnatal maturation and radiology of the growing spine. Neurosurg Clin N Am 2007;18(3):431–461. Crossref, Medline, Google Scholar
- 31. . MRI “road-map” of normal age-related bone marrow. I. Cranial bone and spine. Pediatr Radiol 1995;25(8):588–595. Crossref, Medline, Google Scholar
- 32. . Pediatric spinal bone marrow: assessment of normal age-related changes in the MRI appearance. Pediatr Radiol 1993;23(7):515–518. Crossref, Medline, Google Scholar
- 33. . Normal age-related patterns of cellular and fatty bone marrow distribution in the axial skeleton: MR imaging study. Radiology 1990;177(1):83–88. Link, Google Scholar
- 34. . Developing spinal column: gadolinium-enhanced MR imaging. Radiology 1991;180(2):497–502. Link, Google Scholar
- 35. . Age-related marrow changes in the pelvis: MR and anatomic findings. Radiology 1992;183(1):47–51. Link, Google Scholar
- 36. . Pelvic marrow in adults. Skeletal Radiol 1994;23(5):343–347. Crossref, Medline, Google Scholar
- 37. . Bull’s-eyes and halos: useful MR discriminators of osseous metastases. Radiology 1993;188(1):249–252. Link, Google Scholar
- 38. . Normal bone marrow: signal characteristics and fatty conversion. Magn Reson Imaging Clin N Am 1998;6(3):473–495. Crossref, Medline, Google Scholar
- 39. . MRI of the marrow in the paediatric skeleton. Clin Radiol 2004;59(8):651–673. Crossref, Medline, Google Scholar
- 40. . MR appearance of skeletal neoplasms following cryotherapy. Skeletal Radiol 1994;23(2):121–125. Crossref, Medline, Google Scholar
- 41. . Sickle cell anemia. RadioGraphics 2001;21(4):971–994. Link, Google Scholar
- 42. . Bone marrow imaging. Radiology 1988;168(3):679–693. Link, Google Scholar
- 43. . Magnetic resonance imaging of bone marrow. Curr Opin Radiol 1992;4(6):21–31. Medline, Google Scholar
- 44. . Scurvy in an autistic child: MRI findings. Pediatr Radiol 2013;43(10):1396–1399. Crossref, Medline, Google Scholar
- 45. . Radiology of eating disorders: a pictorial review. RadioGraphics 2013;33(4):1171–1193. Link, Google Scholar
- 46. . Marrow: red, yellow and bad. Pediatr Radiol 2013;43(suppl 1):S181–S192. Crossref, Medline, Google Scholar
- 47. . Useful internal standards for distinguishing infiltrative marrow pathology from hematopoietic marrow at MRI. J Magn Reson Imaging 1997;7(2):394–398. Crossref, Medline, Google Scholar
- 48. . MR imaging of diffuse bone marrow replacement in pediatric patients with cancer. Radiology 1991;181(2):587–589. Link, Google Scholar
- 49. . Aseptic bone/bone marrow necrosis in leukaemia. Scand J Haematol 1985;35(3):354–357. Crossref, Medline, Google Scholar
- 50. . Leukopenia, bone pain, and bone necrosis in patients with acute leukemia: a clinicopathologic complex. Ann Intern Med 1965;62:698–705. Crossref, Medline, Google Scholar
- 51. . Femoral head avascular necrosis: correlation of MR imaging, radiographic staging, radionuclide imaging, and clinical findings. Radiology 1987;162(3):709–715. Link, Google Scholar
- 52. . MRI of osteonecrosis. Clin Radiol 2004;59(12):1079–1093. Crossref, Medline, Google Scholar
- 53. . Bone marrow necrosis. Cancer 2000;88(8):1769–1780. Crossref, Medline, Google Scholar
- 54. . MRI features of bone marrow necrosis. AJR Am J Roentgenol 2007;188(2):509–514. Crossref, Medline, Google Scholar
- 55. . Bone marrow necrosis: clinicopathologic analysis of 20 cases and review of the literature. Am J Hematol 2002;70(4):300–305. Crossref, Medline, Google Scholar
- 56. . Acute lymphocytic leukemia in children presenting with bone marrow necrosis. Am J Hematol 1986;22(4):341–346. Crossref, Medline, Google Scholar
- 57. . Bone marrow necrosis: a study of seventy cases. Johns Hopkins Med J 1972;131(3):189–203. Medline, Google Scholar
- 58. . Primary bone lymphoma: radiographic–MR imaging correlation. RadioGraphics 2003;23(6):1371–1383;discussion 1384–1387. Link, Google Scholar
- 59. . Malignant lymphoma: bone marrow imaging versus biopsy. Radiology 1989;173(2):335–339. Link, Google Scholar
- 60. . Red-yellow marrow conversion: its effect on the location of some solitary bone lesions. Skeletal Radiol 1985;14(1):10–19. Crossref, Medline, Google Scholar
- 61. . Detection of vertebral metastases: comparison between MR imaging and bone scintigraphy. RadioGraphics 1991;11(2):219–232. Link, Google Scholar
- 62. . Effect of radiation therapy on thoracic and lumbar bone marrow: evaluation with MR imaging. AJR Am J Roentgenol 1991;157(1):87–92. Crossref, Medline, Google Scholar
- 63. . Early and late bone-marrow changes after irradiation: MR evaluation. AJR Am J Roentgenol 1990;154(4):745–750. Crossref, Medline, Google Scholar
- 64. . Bone marrow regeneration following large field radiation: influence of volume, age, dose, and time. Cancer 1978;42(3):1057–1065. Crossref, Medline, Google Scholar
- 65. . Hematopoietic marrow regeneration in pediatric patients undergoing spinal irradiation: MR depiction. AJNR Am J Neuroradiol 1995;16(3):461–467. Medline, Google Scholar
- 66. . Radiation-induced changes in MR signal intensity and contrast enhancement of lumbosacral vertebrae: do changes occur only inside the radiation therapy field? Radiology 2002;222(1):179–183. Link, Google Scholar
- 67. . Female pelvic bone marrow: serial MR imaging before, during, and after radiation therapy. Radiology 1995;194(2):537–543. Link, Google Scholar
- 68. . Radiation-induced osteochondromas. Radiology 1982;142(3):643–647. Link, Google Scholar
- 69. . Skeletal complications in pediatric oncology patients. RadioGraphics 1999;19(4):873–885. Link, Google Scholar
- 70. . MR imaging of therapy-induced changes of bone marrow. Eur Radiol 2007;17(3):743–761. Crossref, Medline, Google Scholar
- 71. . Methotrexate osteopathy in patients with osteosarcoma. Radiology 1997;202(2):543–547. Link, Google Scholar
- 72. . Methotrexate osteopathy. Skeletal Radiol 1984;11(1):13–16. Crossref, Medline, Google Scholar
- 73. . Effects of pediatric cancer therapy on the musculoskeletal system. Pediatr Radiol 1997;27(8):623–636. Crossref, Medline, Google Scholar
- 74. . Effect of hematopoietic growth factors on MR images of bone marrow in children undergoing chemotherapy. Radiology 1993;189(3):745–751. Link, Google Scholar
- 75. . MRI in the evaluation of late bone marrow changes following bone marrow transplantation. Br J Radiol 1996;69(828):1145–1151. Crossref, Medline, Google Scholar
- 76. . Bone marrow edema patterns in the ankle and hindfoot: distinguishing MRI features. AJR Am J Roentgenol 2011;197(4):W720–W729. Crossref, Medline, Google Scholar
- 77. . Statistical analysis of the incidence of physeal injuries. J Pediatr Orthop 1987;7(5):518–523. Crossref, Medline, Google Scholar
- 78. . Musculoskeletal trauma in children. Magn Reson Imaging Clin N Am 1998;6(3):521–536. Crossref, Medline, Google Scholar
- 79. . Can running cause the appearance of marrow edema on MR images of the foot and ankle? Radiology 1997;202(2):540–542. Link, Google Scholar
- 80. . MR imaging of the knee: findings in asymptomatic collegiate basketball players. AJR Am J Roentgenol 2002;179(3):641–644. Crossref, Medline, Google Scholar
- 81. . Overuse edema in the bone marrow of the hand: demonstration with MRI. J Comput Assist Tomogr 1998;22(1):25–27. Crossref, Medline, Google Scholar
- 82. . Little League shoulder syndrome: proximal humeral epiphyseolysis in adolescent baseball pitchers—a case report. J Bone Joint Surg Am 1985;67(3):495–496. Crossref, Medline, Google Scholar
- 83. . MR imaging of overuse injuries in the skeletally immature gymnast: spectrum of soft-tissue and osseous lesions in the hand and wrist. Pediatr Radiol 2009;39(12):1310–1316. Crossref, Medline, Google Scholar
- 84. . Physeal widening in the knee due to stress injury in child athletes. AJR Am J Roentgenol 2006;186(5):1260–1264. Crossref, Medline, Google Scholar
- 85. . The radiography of epiphyseal injuries. Radiology 1970;96(2):289–299. Link, Google Scholar
- 86. . Focal periphyseal edema (FOPE) zone on MRI of the adolescent knee: a potentially painful manifestation of physiologic physeal fusion? AJR Am J Roentgenol 2011;197(4):998–1004. Crossref, Medline, Google Scholar
- 87. . Acute osteomyelitis in children: a review of 116 cases. J Pediatr Orthop 1990;10(5):649–652. Crossref, Medline, Google Scholar
- 88. . Haematogenous acute and subacute paediatric osteomyelitis: a systematic review of the literature. J Bone Joint Surg Br 2012;94(5):584–595. Crossref, Medline, Google Scholar
- 89. . Optimal imaging strategy for community-acquired Staphylococcus aureus musculoskeletal infections in children. Pediatr Radiol 2008;38(8):841–847. Crossref, Medline, Google Scholar
- 90. . Infection: musculoskeletal. Pediatr Radiol 2011;41(suppl 1):S127–S134. Crossref, Medline, Google Scholar
- 91. . Diagnosis of osteomyelitis in children: utility of fat-suppressed contrast-enhanced MRI. AJR Am J Roentgenol 2009;192(5):1232–1238. Crossref, Medline, Google Scholar
- 92. . Role of MRI in the diagnosis and treatment of osteomyelitis in pediatric patients. World J Radiol 2014;6(8):530–537. Crossref, Medline, Google Scholar
- 93. . Magnetic resonance differentiation of acute and chronic osteomyelitis in children. Clin Radiol 1990;41(1):53–56. Crossref, Medline, Google Scholar
- 94. . Chronic recurrent multifocal osteomyelitis (CRMO): a longitudinal case series review. Pediatr Radiol 2013;43(3):355–375. Crossref, Medline, Google Scholar
- 95. . Physeal involvement in chronic recurrent multifocal osteomyelitis. Pediatr Radiol 1989;20(1-2):76–79. Crossref, Medline, Google Scholar
- 96. . Chronic recurrent multifocal osteomyelitis: comparison of whole-body MR imaging with radiography and correlation with clinical and laboratory data. Radiology 2009;252(3):842–851. Link, Google Scholar
- 97. . Chronic recurrent multifocal osteomyelitis: review of orthopaedic complications at maturity. J Pediatr Orthop 2002;22(4):501–505. Crossref, Medline, Google Scholar
- 98. . Roentgenologic manifestations of juvenile rheumatoid arthritis. Am J Roentgenol Radium Ther Nucl Med 1962;88:400–423. Medline, Google Scholar
- 99. . Radiological findings in seropositive juvenile chronic arthritis (juvenile rheumatoid arthritis) with particular reference to progression. Ann Rheum Dis 1985;44(10):685–693. Crossref, Medline, Google Scholar
- 100. . Does altered biomechanics cause marrow edema? Radiology 1996;198(3):851–853. Link, Google Scholar
- 101. . A specific bone marrow edema around the foot and ankle following trauma and immobilization therapy: pattern description and potential clinical relevance. Foot Ankle Int 2007;28(4):463–471. Crossref, Medline, Google Scholar
- 102. . Heterogeneous signal in bone marrow on MRI of children’s feet: a normal finding? Skeletal Radiol 1999;28(5):274–278. Crossref, Medline, Google Scholar
- 103. . High-signal T2 changes of the bone marrow of the foot and ankle in children: red marrow or traumatic changes? Pediatr Radiol 2006;36(7):670–676. Crossref, Medline, Google Scholar
- 104. . Regional migratory osteoporosis. Ital J Orthop Traumatol 1985;11(3):371–380. Medline, Google Scholar
- 105. . Quality of life in adults with childhood-onset of complex regional pain syndrome type I. Injury 2009;40(8):901–904. Crossref, Medline, Google Scholar
- 106. . Complex regional pain syndrome. BMJ 2015;351:h2730. Crossref, Medline, Google Scholar
- 107. . Complex regional pain syndrome: a review. Ann Vasc Surg 2008;22(2):297–306. Crossref, Medline, Google Scholar
Article History
Received: Mar 11 2016Revision requested: Apr 19 2016
Revision received: May 9 2016
Accepted: June 1 2016
Published online: Oct 11 2016
Published in print: Oct 2016