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Chronic
lymphocytic thyroiditis - Figure 4. Ultrasound differential
diagnostic of discrete hypoechogenic lesions.
As we mentioned earlier, differential diagnotics of hypoechogenic disrete areas is the essence of thyroid ultrasonography. We demonstrate here several examples. |
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There is a nodule-like hypoechogenic lesion on horizontal section (left upper image). The longitudinal scans (remaining images) disclose that this lesion is really a pipe-like structure running along the dorsal part of the left lobe and the isthmus. A pipe-like lesion cannot be a nodule. |
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There is a nodule-like lesion in the upper-ventrolateral part of the right lobe. No nodule was found on histopathological examination. |
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There are several nodule-like lesions in the thyroid. No nodule was found on histopathological examination. |
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An oxyphilic adenoma was found according to the moderately hypoechogenic lesion. |
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There is a nodule-like lesion in the ventral part of the left lobe. No nodule was found on histopathological examination. |
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A central hypoechogenic area surrounded with echonormal thin rim is not an infrequent finding in Hashimoto's thyroiditis. The differences in the vascular supply is the most probable explanation for the difference in sonographic pattern. Careful analysis reveals puzzle-like borders and intranodular extensive fibrosis. Although these features stand against the possibility that this lesion would be a nodule in a pathological sense but cannot exclude it; FNAC is required. |
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The same situation is presented in this case, too. |
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Multiple hypoechogenic areas with sharp, but irregular borders and intralesional fibrosis. The chance being such lesion a nodule is very low. |
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There is a nodule-like lesion in the ventral part of the left lobe. No nodule was found on histopathological examination. |
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