Solitary necrotic nodules of the liver with "ring"-like calcification: A case report

Figure 1 Computed tomography images of the lesion (orange arrow). A: Plain scan image showing a slightly low density, round lesion and "ring"-like calcification in the lesion, measuring 3.4 cm × 2.7 cm; B: Arterial phase; C: Venous phase; D: Delayed phase; E: After the operation. The high signal in the surgical area was the manifestation of drainage tube, and the lesion had no enhancement in the arterial, venous, and delayed phases.

Figure 2 Laparoscopic surgical resection of solitary necrotic nodules of the liver (orange arrow). A: The lesion was located in the liver and invaded the liver capsule; B: The lesion was completely excised; C and D: Necrotic tissue was seen inside the lesion after incision. An irregular liver tissue after surgical resection (7.6 cm × 5.2 cm × 2.5 cm) and a grayish-yellow nodule (4.2 cm × 3 cm × 2.9 cm) are shown.

Figure 3 Pathological examination of the solitary necrotic nodule of the liver. A: Microscopic view of necrotic nodules wrapped by dense fibers in the liver tissue, surrounded by the infiltration of lymphocytes and histiocytes (HE staining, 40 × magnification). a: Normal liver tissue; b: Lymphocyte; c: Proliferation of fibrous tissue cells; d: Tissue cells; e: Necrotic tissue; Vascular necrosis (orange arrow); Lymphatic tissue (black arrow); Bile duct tissue (yellow arrow); B: Phagocytes are visible (HE staining, 100 × magnification).