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. 2020 Oct-Dec;30(4):420-426.
doi: 10.4103/ijri.IJRI_363_20. Epub 2021 Jan 13.

Tumours of the odontoid peg revisited

Ahmed Saad  1 , Christine Azzopardi  2 , Shahnawaz Haleem  3 , Marcin Czyz  3 , Steven L James  2 , Rajesh Botchu  2
Affiliations

Tumours of the odontoid peg revisited

Ahmed Saad et al. Indian J Radiol Imaging. 2020 Oct-Dec.

Abstract

Introduction: Tumours of the odontoid peg are rare but can potentially cause significant morbidity and mortality.

Methods: A retrospective review of oncology and radiology database of tertiary orthopaedic oncology centre for all lesions affecting the odontoid peg over the last 12 years was performed.

Results: We identified a total of 15 tumours involving the odontoid peg, majority being malignant. Myeloma was the most common tumour.

Conclusion: Tumours of the odontoid peg are rare. Spinal surgeons and Radiologists need to be aware of them.

Keywords: Odonotid; imaging; tumour.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1(<b>A and B</b>)
Figure 1(A and B)
Myeloma. CT sagittal (A) and coronal (B) pathological fracture through sclerotic myelomatous deposit (arrow)
Figure 2
Figure 2
Myeloma. Sag CT showing myelomatous deposit in odontoid (arrow). Further lucent lesions in C3 and C4
Figure 3(<b>A-C</b>)
Figure 3(A-C)
Chordoma. Sagittal T1(A), STIR (B), CT (C) showing tumour within the odontoid (arrow)
Figure 4(<b>A-C</b>)
Figure 4(A-C)
Chordoma. Sagittal T2(A), axial T2(B) and STIR (C) showing tumour within the odontoid (arrow)
Figure 5(<b>A and B</b>)
Figure 5(A and B)
Metastasis. Sagittal T1(A) and STIR (B) showing tumour within the odontoid (arrow)
Figure 6(<b>A-C</b>)
Figure 6(A-C)
Hemangioma. Sagittal CT (A) and STIR (B) showing hemangioma within the odontoid (arrow)
Figure 7(<b>A-E</b>)
Figure 7(A-E)
Aneurysmal Bone Cyst. Sagittal T2 (A), T1 (B), STIR (C) and CT (D) showing expansile lucent lesion (arrow) in odontoid. Sag CT (E) showing partial consolidation of tumour is noted after embolisation and surgery at 12 months
Figure 8(<b>A and B</b>)
Figure 8(A and B)
Management of two different cases with halo (A) and occipitocervical fusion (B)
See this image and copyright information in PMC

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