An ectopic intramedullary hematopoietic niche in a cervical spine meniscoid: a case report

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Farrell, SF
Petcu, EB
Cornwall, J
Rivett, DA
Osmotherly, PG
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2017
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Abstract

We present the first documented case of an ectopic intramedullary hematopoietic niche within a cervical zygapophyseal joint intra-articular meniscoid. The meniscoid was identified in the cervical spine of an 81-year-old male cadaver, located at the dorsal aspect of the right C4-5 zygapophyseal joint, and was noted to be larger and more dense than other meniscoids during disarticulation and dissection of the joint. Histologically, the meniscoid contained hematopoietic cells surrounded by lamellar bone, and was lined with articular cartilage on the surface protruding into the joint cavity. Radiologically, the structure was hypointense on both T1- and T2-weighted magnetic resonance imaging sequences. The potential mechanisms underpinning development of this novel finding and the possible clinical implications are discussed in this report.

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Vascular Cell

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9

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1

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© The Author(s) YEAR. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.

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Biochemistry and cell biology

Cardiovascular medicine and haematology

Clinical sciences

Oncology and carcinogenesis

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Farrell, SF; Petcu, EB; Cornwall, J; Rivett, DA; Osmotherly, PG, An ectopic intramedullary hematopoietic niche in a cervical spine meniscoid: a case report, Vascular Cell, 2017, 9 (1), pp. 3

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