Hepatocytes undergo punctuated expansion dynamics from a periportal stem cell niche in normal human liver.

Background & Aims: While normal human liver is thought to be generally quiescent, clonal hepatocyte expansions have been observed, though neither their cellular source nor their expansion dynamics have been determined. Knowing the hepatocyte cell of origin, and their subsequent dynamics and trajectory within the human liver will provide an important basis to understand disease-associated dysregulation.

Methods: Herein, we use in vivo lineage tracing and methylation sequence analysis to demonstrate normal human hepatocyte ancestry.

Chemotherapy-induced bowel obstruction in small cell lung cancer: a case report.

This case report focuses on an elderly gentleman with extensive stage small cell lung cancer (SCLC) who experienced episodes of bowel obstruction shortly after commencing first-line chemotherapy with cisplatin and etoposide. The patient had no radiological or pathological evidence of intra-abdominal carcinomatosis or paraneoplastic bowel disease secondary to SCLC. Although neurotoxicity is commonly associated with platinum agents, the effect is predominantly peripheral as opposed to autonomic.