Chronic infectious unilateral giant thyroid cyst related to diabetes mellitus: A case report

Figure 1 Neck signs and computed tomography scan imaging. A: Front view of the neck mass; B: Lateral view of the neck mass; C and D: Computed tomography (CT) lung window and mediastinal window: Transverse images show a huge thyroid nodule and deviation of compressed trachea and esophagus to right posterior side; E and F: CT lung window and mediastinal window: Coronal images show a huge thyroid mass and deviation of compressed trachea to right side.

Figure 2 Surgical procedure and intraoperative observation of the thyroid nodule are described in detail. A: Surgical incision, approach, and exploration of the operation; B: Detailed intraoperative exploration site and findings as well as surgical manipulations of the case.

Figure 3 Intraoperative exploration findings and postoperative pathologic analysis of the thyroid nodule. A: Chronic inflammation of the anterior neck muscles and sand-like tissue in the wall of the thyroid gland can be seen during the operation; B: The cystic wall of the removed thyroid nodule was extensively calcified, and the cystic contents were massive brown-black necrotic tissues and rough sand-like calculi; C: Calcification in the thyroid cyst wall; D: Hyperplastic and degenerated fibrous tissue, and scattered thyroid follicular epithelium in the cyst wall, with accompanying necrosis and multinucleated giant cell reaction; E: The content of the cyst was degenerated and necrotic tissue, presenting with an appearance of yellow crumb-like material; F: Chronic inflammation of the fibrofatty tissue and striated muscle tissue with hemorrhage; G: Immunohistochemistry cluster of differentiation 56-positive expression; H: Cytokeratin 19-negative expression.