title: Gastrointestinal Pyogenic Granuloma (Lobular Capillary Hemangioma): An Underrecognized Entity Causing Iron Deficiency Anemia.
abstract: Pyogenic granuloma (PG), more accurately known as lobular capillary hemangioma, is a benign vascular tumor that usually occurs in the skin or oral mucosa. This lesion is rarely reported in the gastrointestinal tract but is known to bleed if not resected. We herein describe a case series with the clinical, endoscopic, and histologic findings of four cases of gastrointestinal PG at our institution. In addition, we provide a review of the literature and summation of all reported cases of PG specific to the gastrointestinal tract. Based on our experience, we suggest that the actual incidence of gastrointestinal PG may in fact be higher than reported because PG can be unrecognized or improperly diagnosed. It is important for the clinician to properly recognize this lesion as a source of anemia and its propensity to bleed during biopsy or resection.
authors.affiliation: Department of Pathology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Marshall W
authors.identifier: 0000-0003-1956-4001
authors.initials: MW
authors.lastname: Meeks
authors.affiliation: Department of Pathology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Umar M
authors.initials: UM
authors.lastname: Kamal
authors.affiliation: Department of Gastroenterology and Hepatology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Muhammad B
authors.initials: MB
authors.lastname: Hammami
authors.affiliation: Department of Gastroenterology and Hepatology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Jason R
authors.initials: JR
authors.lastname: Taylor
authors.affiliation: Department of Gastroenterology and Hepatology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: M Louay
authors.initials: ML
authors.lastname: Omran
authors.affiliation: Department of Pathology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Pathology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
authors.forename: Jin-Ping
authors.initials: JP
authors.lastname: Lai