case_images: PMC11043480_01
case_images: (A) Solid-cystic nodule with calcification in the right side of the neck. (B) There is a solid nodule in the upper pole of the right lobe of the thyroid, measuring approximately 0.4*0.6 cm.
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case_images: ACR TI-RADS 5, a solid cystic nodule in the right thyroid lobe categorized as ACR TI-RADS 2, and a cystic solid nodule with calcification in the right neck ( Figures 1A, B ). A
case_images: Neck CT plain scan + enhancement shows a solid-cystic mass with calcification in the right side of the neck. (A) Coronal view. (B) Horizontal view.
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case_images: CT scan confirmed a solid-cystic lesion with calcification in the right neck, suggestive of a benign lesion, possibly of vascular origin, along with multiple small lymph nodes in bilateral neck and subclavicular regions ( Figures 2A, B ). Considering these findings, the patient underwent general anesthesia and tracheal intubation for the removal of the right neck mass, unilateral thyroidectomy with isthmus resection, and functional neck lymph node dissection.
case_images: Pathological features of the right neck mass showing branchial cleft cyst (Hematoxylin and eosin stain): Lined by a single layer of epithelium, with lymphoid tissue located beneath the epithelium (*20).
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case_images: TG, TTF-1, and PAX-8 in the BCC, indicating metastasis of PTC ( Figures 3A, B ,  4 - 8 ). The patient's postoperative recovery has been satisfactory, and regular follow-up examinations are currently ongoing.
case_images: Right neck mass with positive PAX-8 staining, immunohistochemical envision (*200).
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case_images: TG, TTF-1, and PAX-8 in the BCC, indicating metastasis of PTC ( Figures 3A, B ,  4 - 8 ). The patient's postoperative recovery has been satisfactory, and regular follow-up examinations are currently ongoing.
case_images: Right neck mass with positive TG staining, immunohistochemical envision (*200).
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case_images: TG, TTF-1, and PAX-8 in the BCC, indicating metastasis of PTC ( Figures 3A, B ,  4 - 8 ). The patient's postoperative recovery has been satisfactory, and regular follow-up examinations are currently ongoing.
case_images: Right neck mass with positive TTF-1 staining, immunohistochemical envision (*200).
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case_images: PMC11043480_01_fonc-14-1378405-g007.jpg
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case_images: TG, TTF-1, and PAX-8 in the BCC, indicating metastasis of PTC ( Figures 3A, B ,  4 - 8 ). The patient's postoperative recovery has been satisfactory, and regular follow-up examinations are currently ongoing.
case_images: (A, B) Branchial cleft cyst with concurrent metastasis of papillary thyroid carcinoma (Hematoxylin and eosin stain) (*20, *200).
case_images: fonc-14-1378405-g008.jpg
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case_images: TG, TTF-1, and PAX-8 in the BCC, indicating metastasis of PTC ( Figures 3A, B ,  4 - 8 ). The patient's postoperative recovery has been satisfactory, and regular follow-up examinations are currently ongoing.