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Pyloric Stenosis%u2022 Definition: Hypertrophy of pyloric muscle causing gastric outlet obstruction%u2022 Presentation:%u2022 Persistent non-bilious projectile vomiting weeks after birth%u2022 Usually occurs 1 hour after feeding%u2022 Constant hunger, weight loss, dehydration%u2022 Palpable olive-shaped mass in abdomen%u2022 Complications: Electrolyte abnormalities, metabolic alkalosis%u2022 Diagnosis: Ultrasound (gold standard)%u2022 Treatment:%u2022 First-line: Fluid replacement and electrolyte correction%u2022 Definitive: Pyloromyotomy (surgical division of pyloric muscle)%u2022 Prognosis: Excellent with timely treatmentThis Photo by Unknown Author is licensed under CC BY-SA