Multidisciplinary Management of the Rare Coexistence of Multiple Endocrine Neoplasia Type 1 and Chronic Thromboembolic Pulmonary Hypertension: A Case Report.

Multiple endocrine neoplasia type 1 (MEN1) is a complex endocrine tumour syndrome. Broader understanding of its diverse clinical manifestations has transformed its surveillance and management. The protracted nature of MEN1 significantly impacts quality of life, requiring careful observation, symptom control and tailored treatment decisions with coordinated, multidisciplinary team (MDT) care. This case report follows the clinical journey of a patient with MEN1 and illustrates how management can be challenging when faced with overlapping chronic conditions. In this instance, the patient's course was further complicated by chronic thromboembolic pulmonary hypertension (CTEPH), posing additional diagnostic and therapeutic considerations. The case underscores the importance of vigilant follow-up of patients, not only due to high disease penetrance and risk of recurrence, but to avoid diagnostic overshadowing of other significant co-morbidities. With a focus on long-term outcomes and balancing invasive interventions, this case report truly demonstrates the strengths of the MDT approach in healthcare.