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Fibrocartilaginous mesenchymoma of bone
Specialty Oncology  Edit this on Wikidata

Fibrocartilaginous mesenchymoma of bone (FCMB) is an extremely rare tumor first described in 1984. [1] [2] About 26 cases have been reported in literature, with patient ages spanning from 9 to 25 years, though a case in a male infant aged 1 year and 7 months has been reported. [3] [4] Quick growth and bulky size are remarkable features of this tumor.

Diagnosis

The most common locations are the shaft and epyphises of long bones ( fibula and humerus) but the spine, metatarsal bones, and ilium have been involved as well. Radiologic examination evidences osteolytic areas with a lobulated framework comprising radiolucent and radiodense foci admixed to speckled calcification. Cortical destruction is a common finding with no soft tissue expansion in many cases. Histopathology of the lesion shows large areas of mature fibrous stroma undergoing hyaline cartilage metaplasia resulting in conspicuous lobules or gradual transformation into chondroid foci. Both hyaline cartilage and chondroid in turn undergo calcification and endochondral cancellous bone formation mimicking epiphyseal plate-like cartilage.[ citation needed]

Differential diagnosis is concerned with fibrocartilaginous dysplasia of bone, desmoplastic fibroma, low-grade fibrosarcoma, chondromyxoid fibroma and low-grade chondrosarcoma. [5] [6] [7]

A full account of imaging findings on radiography, bone scan, CT and magnetic resonance has been provided by Sumner et al. [8]

Treatment

Surgery is curative despite possible local relapses. Wide resection of the tumor and resection arthrodesis with an intramedullary nail, vertebrectomy and femoral head allograft replacement of the vertebral body, resection of the iliac wing and hip joint disarticulation have been among the performed procedures. [2] [5] [6]

The close resemblance of FCMB to fibrocartilaginous dysplasia has suggested to some scholars that they might be closely related entities, although the latter features woven bone trabeculae without osteoblastic rimming, which is a quite distinctive aspect. Instead, the occurrence of epiphyseal plate-like cartilage is peculiar of the former.[ citation needed]

Notes

  1. ^ Dahlin DC, Bertoni F, Beabout JW, Campanacci M (1984). "Fibrocartilaginous mesenchymoma with low-grade malignancy". Skeletal Radiology. 12 (4): 263–9. doi: 10.1007/bf00349507. PMID  6505732. S2CID  12622136.
  2. ^ a b Cozzutto C, Cornaglia-Ferraris P (March 1991). "Fibrocartilaginous mesenchymoma of bone". Pathology, Research and Practice. 187 (2–3): 279–83. doi: 10.1016/S0344-0338(11)80784-3. PMID  2068011.
  3. ^ Gambarotti M, Righi A, Vanel D, Cocchi S, Benini S, Elli FM, et al. (July 2017). "Fibrocartilaginous mesenchymoma of bone: a single-institution experience with molecular investigations and a review of the literature". Histopathology. 71 (1): 134–142. doi: 10.1111/his.13201. hdl: 11577/3223054. PMID  28239886. S2CID  4787327.
  4. ^ Hayes SJ, Wells S, Harake J, Henderson JJ, Malcolm AJ (July 2005). "Fibrocartilagenous mesenchymoma of bone: the youngest reported case in a patient aged 1 year and 7 months". Journal of Clinical Pathology. 58 (7): 782–3. PMC  1770726. PMID  15976352.
  5. ^ a b Gedikoglu G, Aksoy MC, Ruacan S (August 2001). "Fibrocartilaginous mesenchymoma of the distal femur: case report and literature review". Pathology International. 51 (8): 638–42. doi: 10.1046/j.1440-1827.2001.01247.x. PMID  11564220. S2CID  30961094.
  6. ^ a b Gibson JN, Reid R, McMaster MJ (September 1994). "Fibrocartilaginous mesenchymoma of the fifth lumbar vertebra treated by vertebrectomy". Spine. 19 (17): 1992–7. doi: 10.1097/00007632-199409000-00022. PMID  7997935. S2CID  46666622.
  7. ^ Cherradi N, Jelthi A, Alhamany Z, Miri A, Forest M (1999). "[Fibrocartilaginous mesenchymoma of bone. A case report]". Clinical and Experimental Pathology. 47 (5): 249–55. PMID  10598375.
  8. ^ Sumner TE, Ward WG, Kilpatrick SE, Opatowsky MJ (May 2000). "Fibrocartilaginous mesenchymoma of bone: case report and review of the literature". Pediatric Radiology. 30 (5): 315–7. doi: 10.1007/s002470050747. PMID  10836593. S2CID  29836066.

References

  • Bhaduri A, Deshpande RB (December 1995). "Fibrocartilagenous mesenchymoma versus fibrocartilagenous dysplasia-: are these a single entity?". The American Journal of Surgical Pathology. 19 (12): 1447–8. doi: 10.1097/00000478-199512000-00015. PMID  7503369. S2CID  44361999.
  • Ishida T, Dorfman HD (September 1993). "Massive chondroid differentiation in fibrous dysplasia of bone (fibrocartilaginous dysplasia)". The American Journal of Surgical Pathology. 17 (9): 924–30. doi: 10.1097/00000478-199309000-00009. PMID  8352377.

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