Microgastria-limb reduction defect syndrome

Microgastria-limb reduction defect syndrome (also known as microgastria-limb reduction association) is an extremely rare congenital condition characterized by an abnormally small stomach (microgastria) combined with limb reduction defects. The syndrome affects multiple body systems, most prominently the gastrointestinal tract and the skeletal/limb system. Microgastria results from incomplete development of the stomach during embryogenesis, leading to a tubular or significantly underdeveloped stomach that impairs normal feeding and digestion. Limb anomalies can range from absent or hypoplastic fingers (oligodactyly) to more severe reduction defects involving the radius, ulna, or entire limbs. Additional associated features may include asplenia or hyposplenia, cardiac defects, lung anomalies (such as absent or hypoplastic lung), vertebral anomalies, and genitourinary malformations. Clinical presentation typically occurs at birth or in the neonatal period, with affected infants experiencing severe feeding difficulties, gastroesophageal reflux, vomiting, and failure to thrive due to the markedly reduced gastric capacity. The severity of symptoms varies depending on the degree of stomach underdevelopment and the extent of associated malformations. Treatment is primarily supportive and surgical. Nutritional management is critical and may involve frequent small feedings, specialized formulas, or in severe cases, gastric augmentation surgery (such as a Hunt-Lawrence pouch procedure) to increase stomach capacity. Surgical correction of limb and other structural anomalies may also be required. Long-term multidisciplinary care involving gastroenterology, orthopedics, cardiology, and nutrition specialists is essential. The prognosis depends on the severity of associated malformations, particularly cardiac and pulmonary anomalies.

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