Introduction:
Marfan syndrome, an inheritable connective tissue disorder, engenders multifaceted systemic effects, impacting the musculoskeletal, ocular, cardiovascular, neurological, cutaneous, and respiratory systems. Its prevalence ranges from 1 : 5000 to 1 : 10,000 individuals, with approximately 25% of cases attributed to spontaneous genetic mutations. In the United States, an estimated 50,000 individuals are affected, and an additional 200,000 individuals exhibit related connective tissue disorders.

Aim:
Here, we present a compelling case of a young soldier who enlisted in our Military Training Center, wherein a previously undiagnosed Marfan syndrome came to light.

Case study:
Notably, a strong family history of the syndrome was evident. Clinical manifestations included pectus excavatum necessitating surgical intervention, an upper-to-lower segment ratio (ULSR) less than 0.86, a span-to-height ratio exceeding 1.05, wrist and thumb signs, scoliosis exceeding 20°, and mitral valve prolapse. Notably, no clinical anomalies about the patient's pulmonary or cutaneous systems were detected.

Results and discussion:
While considerable advancements have been made in comprehending the pathogenesis, the diagnostic protocol for Marfan syndrome remains rooted in the Ghent criteria, mandating a thorough evaluation of multiple organ systems.

Conclusions:
Consequently, the patient was deemed unsuitable for Special Forces deployment and was enlisted as an auxiliary service member, overseen by the Medical Department of the Military Center. Post-discharge, we strongly advocate routine follow-up visits with a family physician to ensure comprehensive medical surveillance.