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*Spinal tumour - diagnosis. | *Spinal tumour - diagnosis. | ||
====Thyroid gland==== | ====Thyroid gland and parathyroid gland==== | ||
*Thyroid nodule - diagnosis. | *Thyroid nodule - diagnosis. | ||
*Parathyroid - confirm tissue type. | |||
Notes: | |||
*Thyroid often has birefringent (calcium oxalate) crystals (60 of 80 cases) whereas parathyroid less often does (2 or 20 cases).<ref name=pmid24618617>{{cite journal |authors=Wong KS, Lewis JS, Gottipati S, Chernock RD |title=Utility of birefringent crystal identification by polarized light microscopy in distinguishing thyroid from parathyroid tissue on intraoperative frozen sections |journal=Am J Surg Pathol |volume=38 |issue=9 |pages=1212–9 |date=September 2014 |pmid=24618617 |doi=10.1097/PAS.0000000000000204 |url=}}</ref> | |||
*Thyroid usually follicular - though parathyroid occasionally is pseudofollicular. | |||
====Prosthetic joint==== | ====Prosthetic joint==== |
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