Abstract | INTRODUCTION:
Adamantinoma is a rare low-grade malignant tumor in young adults. Recent advances in molecular techniques have shown different variants with discordance between genotype and phenotype. This poses a challenge in diagnosis and management. Ewing's-like adamantinoma is one such variant. The appropriate treatment protocol for this dedifferentiated tumor remains to be established. Here, we present a rare case of Ewing's-like Adamantinoma treated with limb salvage surgery using three step Ilizarov technique with good results. CASE REPORT: A 38-year-old lady presented at our OPD complaining of recent onset pain and gradual increase in size over a long standing swelling in the right lower tibia. Radiologically was diagnosed as Ewing's but was not responsive to chemotherapy. A Tru-Cut biopsy showed histological picture of dedifferentiated adamantinoma. Immunohistochemistry showed CD99 positivity. FISH revealed (11;22) translocation confirming Ewing's-like adamantinoma. She was managed with wide excision followed by staged Ilizarov distraction-osteogenesis and bone transport to correct the 13 cm discrepancy in bone length. There have been no signs of recurrence on post-resection follow-up of 2 years. Patient attained full range of knee and ankle movements. CONCLUSION: The controversy as to what constitutes the difference between adamantinoma-like Ewing's and Ewing's-like adamantinoma persists despite technological advances. The appropriate treatment protocol remains to be established. Ilizarov three step techniques provide a feasible alternative to amputation while circumventing the difficulties of large bone reconstruction in the distal tibia.
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Authors | T K Jeejesh Kumar, Puneeth K Pai, Priyavrata Rajasubramanya |
Journal | Journal of orthopaedic case reports
(J Orthop Case Rep)
Vol. 11
Issue 5
Pg. 61-67
(May 2021)
ISSN: 2250-0685 [Print] India |
PMID | 34557442
(Publication Type: Case Reports)
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Copyright | Copyright: © Indian Orthopaedic Research Group. |