MRI findings and utility of DWI in the evaluation of solid parathyroid lesions
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To evaluate the MRI findings of solid parathyroid lesions and to elaborate on a possible improvement of MRI detection of parathyroid lesions by the use of additional DWI.
Materials and methods
MRI and DWI properties of pathologically proven 20 solid parathyroid lesions were retrospectively reviewed. Mean ADC values (b50 + b400 + b800/3) of parathyroid lesions were compared with that of normal appearing thyroid parenchyma (TP), sternocleidomastoid muscle (SCM) and jugulodigastric lymph nodes (JDLN).
Of lesions, 4 were parathyroid hyperplasia, 13 parathyroid adenoma and 3 parathyroid adenocarcinoma. All parathyroid lesions were very bright on fat-saturated T2W images. Parathyroid hyperplasia and adenoma were small sized, homogenous, well-defined and low on T1W, high on T2W and avidly enhancing. Parathyroid carcinoma was large sized, ill-defined and very heterogeneous on MRI including DWI. Means ADC values of parathyroid hyperplasia, adenoma, and adenocarcinoma, TP, SCM and JDLN were measured as 2.3 ± 0.14 × 10−3, 1.7 ± 0.45 × 10−3, 1.5 ± 1.48 × 10−3, 0.87 ± 0.40 × 10−3, 0.55 ± 0.21 × 10−3 and 0.96 ± 0.33 × 10−3 mm2/s, respectively. All parathyroid lesions had high diffusion properties comparing other soft tissue structures of head and neck region. By increasing strength (b value) of diffusion tensor on DWI, solid parathyroid lesions still kept their brightness comparing other soft tissue structures of head and neck region because of their high T2 properties.
Solid parathyroid lesions had higher diffusion properties comparing other soft tissues structures of head and neck region. This feature makes them easily differentiate from nearby structures on fat-saturated T2W and DWI.
KeywordsParathyroid MRI DWI Solid parathyroid lesions MRI findings solid parathyroid lesions DWI of solid parathyroid lesions
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Our studies is retrospective. For this type of study, formal consent is not required.
This article does not contain any studies with animals performed by any of the authors.
- 11.Peeler BB, Martin WH, Sandler MP, Goldstein RE (1997) Sestamibi parathyroid scanning and preoperative localization studies for patients with recurrent/persistent hyperparathyroidism or significant comorbid conditions: development of an optimal localization strategy. Am Surg 63:37–46PubMedGoogle Scholar
- 25.Pellittery PK (2010) Management of parathyroid disorders. In: Flint PW, Cummings CW (eds) Cummings otolaryngology head and neck surgery, 5th edn. Mosby/Elsevier, PhiladelphiaGoogle Scholar