rare liver tumours

Primary

hepatic melanoma in child: a case report and literature review. On portal venous phase, the lesion’s enhancement effect dropped off with ambiguous margin.

Primary

hepatic melanoma in child: a case report and literature review. On delayed phase, the lesion’s density was adjacent to surrounded liver.

Calcifying

nested stromal epithelial tumor of the liver in a patient with Klinefelter syndrome: a case report and review of the literature. CT findings. a A large, heterogeneously enhanced mass with focal calcification was present in the right lobe of the liver. b Multiple recurrent lesions in the remnant liver and an enlarged para-aortic lymph node on postoperative day 62

Cushing

syndrome as presenting symptom of calcifying nested stromal–epithelial tumor of the liver in an adolescent boy: a case report. Image of magnetic resonance imaging scan showing a large mass in segments 4 to 8 of the liver

MRI

appearances of hepatic epithelioid hemangioendothelioma: a retrospective study of 57 patients. A 35-year-old male HEH patient. a Target sign on portal phase image, consisted of concentric layers including markedly hypointense in central tumor regions and peripheral zones which were moderately hypointense relative to liver parenchyma (arrow). b Capsular retraction caused by a subcapsular lesion (white arrow) and lollipop sign, consisted of a well-defined tumor (as the “candy”) and an obstructed portal vein (as the “stick”) (black arrow) on portal phase image

Clinical

characteristics and CT features of hepatic epithelioid haemangioendothelioma and comparison with those of liver metastases. A 34-year-old female with diffuse nodular type HEH. Axial and multiple phase contrast-enhanced CT images (a–c) show multiple, different-sized, coalescing, homogeneous, hypoattenuating nodules diffusing throughout the liver parenchyma. Masses show ring-like enhancement and the “target” sign. At the same time, there was arc-shaped effusion around the liver and peritoneal thickening. Peripheral distribution of masses and capsular retraction are also observed. The axial lung window image (d) shows lung involvement consisting of multiple round-like nodules

Clinical

characteristics and CT features of hepatic epithelioid haemangioendothelioma and comparison with those of liver metastases. A 40-year-old female with diffuse nodular type HEH. Axial arterial and portal phase CT images (a, b) show multiple, diffuse nodules that lack obvious enhancement and confluent masses with strip-like enhancement located at the subcapsular region of the liver, accompanied by liver morphological changes and proportion imbalance. On follow-up CT performed 18 months later without any treatment, axial arterial and portal phase images (c, d) show no obvious changes in the lesions

Clinical

characteristics and CT features of hepatic epithelioid haemangioendothelioma and comparison with those of liver metastases. A 48-year-old female with multifocal nodular type HEH. An axial unenhanced CT image (a) shows multiple round-like low-density lesions in the right lobe of the liver. The lesions show slight enhancement in the arterial phase (b). Axial and coronal reconstruction of portal phase CT images (c, d) show a larger nodule in the right lobe with portal veins entering and terminating in the periphery of the lesion (red arrow). This configuration resembles a typical “lollipop” sign

Clinical

characteristics and CT features of hepatic epithelioid haemangioendothelioma and comparison with those of liver metastases. A 41-year-old female with solitary nodular type HEH. An axial unenhanced CT image a shows a round nodule with ill-defined, heterogeneous hypodensity. An axial arterial phase image (b) shows rink-like enhancement. An axial portal phase image (c) shows “target” sign enhancement. Coronal reconstruction of the portal venous phase (d) shows a narrowing portal vein branch adjacent to the lesion. This patient was initially misdiagnosed with hepatic abscesses. On follow-up CT performed 10 months after resection (e, f), a new lesion was detected in the right lobe of the liver (red arrowheads)

MRI

appearances of hepatic epithelioid hemangioendothelioma: a retrospective study of 57 patients. The appearance of lollipop sign on MRI images of 4 HEH patients (arrows)

MRI

appearances of hepatic epithelioid hemangioendothelioma: a retrospective study of 57 patients. The appearance of capsular retraction on MRI images of 4 HEH patients (arrows)