Challenges in imaging and histopathological assessment of a giant cell tumour with secondary aneurysmal cyst in the patella

Soo F in Low, Mohammad Hanafiah, Md Isa Nurismah, Aziz Suraya

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1 Citation (Scopus)

Abstract

The patella is an uncommon site for all primary and metastatic bone tumours and primary intra-osseous tumours of the patella are very rare. A majority of the patella tumours are benign. We report a patient with a sudden onset swelling and pain of the right knee following a staircase fall. The plain radiograph showed an expansile multiseptated patella lesion and it was further assessed with an MRI. The radiological findings and the initial histopathological features from a limited sample were suggestive of a primary aneurysmal bone cyst. However, the final histopathological diagnosis from a more adequate specimen was a giant cell tumour with a secondary aneurysmal bone cyst.

Original languageEnglish
JournalBMJ Case Reports
Volume2013
DOIs
Publication statusPublished - 2013

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Giant Cell Tumors
Patella
Cysts
Aneurysmal Bone Cysts
Neoplasms
Knee
Bone and Bones
Pain

ASJC Scopus subject areas

  • Medicine(all)

Cite this

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AB - The patella is an uncommon site for all primary and metastatic bone tumours and primary intra-osseous tumours of the patella are very rare. A majority of the patella tumours are benign. We report a patient with a sudden onset swelling and pain of the right knee following a staircase fall. The plain radiograph showed an expansile multiseptated patella lesion and it was further assessed with an MRI. The radiological findings and the initial histopathological features from a limited sample were suggestive of a primary aneurysmal bone cyst. However, the final histopathological diagnosis from a more adequate specimen was a giant cell tumour with a secondary aneurysmal bone cyst.

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