Severe iron deficiency anemia driven by parasitic infestations can mimic advanced gastrointestinal malignancies in older patients, threatening lives across endemic regions where soil-transmitted helminths extract host blood and disrupt iron absorption.
Medical teams at regional centers recently documented distinct clinical presentations in older male patients suffering from profound hemoglobin drops.
A 60-Year-Old Farmer’s Critical Hemoglobin Drop
cureus.com reported the case of a 60-year-old male farmer from South Asia who presented with exertional dyspnea, generalized weakness, and spoon-shaped nails known as koilonychia.
Laboratory evaluations confirmed a hemoglobin level of 4.2 g/dL and a serum ferritin level of 1.92 ng/mL. An upper gastrointestinal endoscopy subsequently revealed multiple live Ascaris lumbricoides worms residing in the duodenum.
Scans Mimicking Gastric Malignancy
Further clinical investigations highlight how intestinal parasites present complex diagnostic challenges in older adults. A separate case detailed by pmc.ncbi.nlm.nih.gov described a 61-year-old male patient admitted to an emergency department following a syncopal episode, presenting with an initial hemoglobin level of 2.5 g/dL and a serum ferritin level of 1.96 ng/ng/mL.
Contrast-enhanced computed tomography of the abdomen for this patient demonstrated marked thickening of the gastric fundus and body, raising initial concerns for gastric malignancy. Subsequent esophagogastroduodenoscopy performed after hemodynamic stabilization identified short-segment Barrett’s esophagus alongside multiple motile nematodes attached to the duodenal mucosa.
While stool microscopy yielded negative results for that patient, clinicians linked the presentation to hookworm exposure driven by habitual barefoot outdoor work and wild meat consumption.
Albendazole and Iron Therapy Treat Parasitic Anemia
Managing profound iron deficiency anemia driven by parasitic infections relies on a combination of anti-helminthic therapy, red blood cell transfusions, and iron replenishment.
The patient featured in the cureus.com report received treatment with albendazole alongside oral iron supplementation and red cell concentrates, achieving marked clinical and hematological recovery at a three-month follow-up. Similarly, the patient documented by pmc.ncbi.nlm.nih.gov responded successfully to albendazole combined with proton pump inhibitor therapy and packed red blood cell transfusions.
Both medical reports emphasize that clinicians should consider parasitic infections within differential diagnoses when evaluating severe microcytic anemia in endemic settings, preventing misdiagnoses of primary gastrointestinal malignancies.
Clinical FAQs on Helminth-Induced Anemia
Why do parasitic infections cause severe iron deficiency anemia? Soil-transmitted helminths such as hookworms use specialized mouthparts to anchor themselves to the mucosa of the duodenum and proximal jejunum, actively ingesting host blood and secreting anticoagulants that cause high-volume chronic blood loss. Other parasites like Ascaris lumbricoides contribute to anemia by impairing nutrient absorption, causing intestinal disturbances, and creating nutritional competition.
How do clinicians differentiate between parasitic infestations and gastric cancer? Cross-sectional imaging such as computed tomography scans can show gastric wall thickening that mimics advanced malignancy. Definitive differentiation requires endoscopic evaluation to visualize live nematodes directly in the gastrointestinal tract, supported by complete blood counts showing elevated eosinophil percentages and thorough patient occupational and environmental histories.
What are the primary treatment methods for helminth-related anemia? Treatment protocols typically combine anti-helminthic medications like albendazole with targeted red blood cell transfusions for severe hemodynamic instability and oral iron supplementation to restore depleted iron stores over a three-month recovery period.
Worth a look