Collagenous Gastritis: An Unusual Cause of Anemia in Young Patients

Authors

DOI:

https://doi.org/10.22516/25007440.1264

Keywords:

Gastritis, anemia, collagenous colitis, celiac disease

Abstract

Collagenous gastritis (CG) is a rare condition that, in most cases, presents with severe iron-deficiency anemia or recurrent abdominal pain. It is characterized by increased collagen deposition in the subepithelial mucosa, associated with inflammatory infiltrates in the lamina propria. Similar histological findings can be observed in collagenous enterocolitis. The pathophysiology and prognosis of the disease are not yet fully understood, and clinical presentation may vary according to age group.

This report describes a 15-year-old female patient referred by hematology for evaluation of chronic anemia, accompanied by asthenia, adynamia, pica, and abdominal pain. Esophagogastroduodenoscopy revealed severe mucosal alterations in the gastric body, and thorough pathological review confirmed the diagnosis of collagenous gastritis.

Histologically observed collagen deposits may be related to a generalized disease affecting different areas of the gastrointestinal tract. In light of this case, a review of the available literature was conducted.

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Author Biographies

Clara Eugenia Plata García, Hospital Universitario San Ignacio

Médico Pediatra y Especialista en gastroenterología pediátrica, Universidad El Bosque. Docente, Pontificia Universidad Javeriana, Hospital San Ignacio. Jefe del servicio de Gastroenterología, Hepatología y Nutrición Pediátrica, Hospital Universitario San Ignacio. Miembro y actual vocal de Bogotá, Colegio Colombiano de Gastroenterología, Hepatología y Nutrición Pediátrica. Bogotá, Colombia.

Maria alexandra Torres Guerra, Hospital Militar Central

Médico, Universidad de Los Andes. Especialista en Pediatría, Universidad Militar Nueva Granada. Especialista en Epidemiología, Clínica de la Universidad Autónoma de Bucaramanga. Hospital Militar Central. Bogotá, Colombia.

Sandra Judith Huertas-Pacheco, Clínica Reina Sofía, Laboratorio Clínico y de Patología

Médico y especialista en Patología y Epidemiología. Patología Clínica y Anatómica, Universidad Nacional de Colombia. Docente ocasional de posgrado, Facultad de Medicina, Universidad Nacional de Colombia. Docente de Patología para el programa de fellow de Gastroenterología, Unisanitas. Patóloga de laboratorio, Clínica Universitaria Colombia, Colsanitas S. A. Jefe del servicio de Patología, Clínica Reina Sofía, Grupo Keralty. Bogotá, Colombia.

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Figura 1. Curva de hemoglobina. Hb: hemoglobina; HCM: hemoglobina corpuscular media; Hto: hematocrito; VCM: volumen corpuscular medio. Imagen propiedad de los autores.

Published

2025-09-30

How to Cite

Plata García, C. E., Torres Guerra, M. alexandra, & Huertas Pacheco, S. J. (2025). Collagenous Gastritis: An Unusual Cause of Anemia in Young Patients. Revista Colombiana De Gastroenterología, 40(3), 333–338. https://doi.org/10.22516/25007440.1264