Focal Nodular Hyperplasia of the Liver without a Central Scar: A Rare Case Report

Focal Nodular Hyperplasia (FNH) is most frequent benign tumour of liver just after the haemangioma, which makes about 3%-5% of all primary hepatic tumours. It occurs frequently in females during their middle age group. This is case report of 48-year-old female patient having complains of upper abdominal pain since last one year. Using abdominal ultrasonography and a CT scan, it was discovered that segment four of the liver contained a tumour measuring 11 cm in maximum diameter without a central scar, which made preoperative imaging scans for FNH difficult to diagnose. Lobectomy of left lobe was done. The gross specimen on cut section revealed a lesion with nodular appearance and absence of any central stellate scar. On the basis of histopathological finding the diagnosis of FNH without central stellet scar was made. To ensure adequate therapy, it is essential to differentiate between FNH and other hyper vascular liver lesions and metastases. Therefore, it is difficult to diagnose FNH before surgery if there are no typical radiological findings. This case report focused on FNH without the usual radiological findings and emphasised its importance to distinguish it from other malignant hyper vascular liver entities.