PMC5842739_01
The features of ultrasonography. The presence of a foreign body that was approximately 2.43 cm hyperechoic linear image embedded in the left part of the thyroid lobe, and part of it was located outside the back membrane of the thyroid. A hypoechoci area surrounding the foreign body is regarded as the ultrasonic characteristics of inflammatory response.
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After neck ultrasonography had been performed, the report revealed the presence of abnormal echo structure which was approximately 2.43 cm hyperechoic linear image embedded in the left part of the thyroid lobe and surrounded by a thin hypoechoic area (Figure 1).
The picture of the fish bone. The fish bone with a sharply pointed tip was grasped and pulled out by the mosquito forceps. The length was about 2.45 cm.
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The sharp object was a fish bone about 2.45 cm in length (Figure 2).
The appearance of histopathology (HE, x100). Under the light microscope, the thyroid histopathological sections with HE staining. (A) The area of the hemorrhage cavity after pulling out the fish bone. (B) The well-defined region composed of macrophages and inflammatory cells in accordance with classic foreign body granulomatous inflammation. (C) Normal thyroid follicle.
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The pathological results showed that a well-defined region composed of macrophages and inflammatory cells around the hemorrhage cavity in accordance with classic foreign body granulomatous inflammation (Figure 3).