Giraffe pattern

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Giraffe pattern (also known as the pseudonodular appearance) is a distinctive ultrasound appearance characteristic of Hashimoto thyroiditis. It consists of a thyroid gland with multiple echogenic nodules, separated from one another by bands of hypoechogenicity, reminiscent of a giraffe hide. Studies have shown that this pattern is always benign.

~~-Giraffe pattern is a distinctive~~
+Giraffe pattern (also known as the pseudonodular appearance) is a distinctive ultrasound appearance characteristic of <a href="/articles/hashimoto-thyroiditis">Hashimoto thyroiditis</a>. It consists of a thyroid gland with multiple echogenic nodules, separated from one another by bands of hypoechogenicity, reminiscent of a giraffe hide. Studies have shown that this pattern is always benign.

References changed:

1. Bonavita JA, Mayo J, Babb J, Bennett G, Oweity T, Macari M, Yee J. Pattern recognition of benign nodules at ultrasound of the thyroid: which nodules can be left alone?. (2009) AJR. American journal of roentgenology. 193 (1): 207-13. <a href="https://doi.org/10.2214/AJR.08.1820">doi:10.2214/AJR.08.1820</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/19542415">Pubmed</a>
2. Virmani V, Hammond I. Sonographic patterns of benign thyroid nodules: verification at our institution. (2011) AJR. American journal of roentgenology. 196 (4): 891-5. <a href="https://doi.org/10.2214/AJR.10.5363">doi:10.2214/AJR.10.5363</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/21427342">Pubmed</a>

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