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[Multiple endocrine neoplasia type IIb]

A M Ruivo1, T Matias, R Rosa

  • 1Serviço de Medicina e de Cirurgia do Hospital de São José, Lisboa.

Acta Medica Portuguesa
|January 1, 1995
PubMed
Summary
This summary is machine-generated.

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This case study details a 32-year-old woman with multiple endocrine neoplasia, type IIb, presenting with intestinal issues. Despite a clear diagnosis, persistently high calcitonin levels pose a diagnostic challenge, indicating potential undetected tumor activity.

Area of Science:

  • Endocrinology
  • Oncology
  • Genetics

Background:

  • Multiple Endocrine Neoplasia type IIb (MEN2B) is a rare genetic disorder.
  • MEN2B is characterized by medullary thyroid carcinoma, pheochromocytomas, and mucosal neuromas.
  • Early diagnosis and management are crucial for patient outcomes.

Observation:

  • A 32-year-old woman presented with intestinal sub-occlusion.
  • Clinical phenotype included bilateral pheochromocytomas, aiding in diagnosis.
  • Elevated serum calcitonin levels were detected.

Findings:

  • The patient was diagnosed with multiple endocrine neoplasia, type IIb.
  • Despite treatment and no macroscopic evidence of tumor relapse, calcitonin levels remained high.
  • This suggests a potential for occult or residual disease.

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Implications:

  • High calcitonin levels in MEN2B may indicate subclinical disease progression.
  • This case highlights the importance of monitoring biochemical markers beyond imaging.
  • Further investigation is needed to understand the source of persistent calcitonin elevation.