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[Endocrine polyadenomatosis with carcinoid tumor]
La Semaine Des Hopitaux : Organe Fonde Par L'Association D'Enseignement Medical Des Hopitaux De Paris
|September 10, 1976
Summary
This study reviewed 26 cases of multiple endocrine tumors with carcinoid tumors, finding most originated from the anterior intestine. No carcinoid syndrome was observed, supporting the APUD concept.
Area of Science:
- Endocrinology
- Oncology
- Histopathology
Context:
- Review of 26 cases of multiple endocrine tumors (METs) associated with carcinoid tumors.
- Analysis of carcinoid tumor localization in relation to embryological origins.
- Investigation into the diagnostic challenges and histological classification of these tumors.
Purpose:
- To analyze the incidence and location of carcinoid tumors in patients with multiple endocrine tumors.
- To explore the relationship between carcinoid tumors and the APUD (Amine Precursor Uptake and Decarboxylation) cell concept.
- To discuss the histological distinctions and potential misclassifications, such as carcinoid islet cell tumors.
Summary:
- Carcinoid tumors were present in 26 reviewed cases of multiple endocrine tumors.
- 44% of carcinoid tumors were found in the bronchus, and 20% in the small intestine or duodenum.
- A significant 76% of carcinoid tumors arose from embryological derivatives of the anterior intestine, with no reported carcinoid syndrome.
- Histological classification challenges led to the term 'carcinoid islet cell tumors', aligning with the APUD concept.
Impact:
- Highlights the common origin of carcinoid tumors in the anterior intestinal tract within the context of multiple endocrine tumors.
- Underscores the importance of considering the APUD concept in understanding the pathophysiology of these neuroendocrine neoplasms.
- Emphasizes the need for precise histological differentiation to avoid diagnostic ambiguity in carcinoid and islet cell tumors.