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Interobserver Variability of Pulmonary Carcinoids


Introduction: Lung carcinoids are neuroendocrine tumors histopathologically classified into typical (TC; no necrosis, <2 mitoses/2 mm2) and atypical (AC; necrosis or 2-10 mitoses/2 mm2). Identification of mitoses may be hampered by the presence of apoptotic cells, and reported prediction of prognosis based on histopathology varies, especially for ACs.

Aim(s): To determine the reproducibility of WHO lung carcinoid classification.

Materials and methods: Five lung pathologists reclassified 120 carcinoids. Results were correlated to clinical follow-up and molecular data, and κ-values were calculated.

Conference: 10th Annual ENETSConcerence (2013)

Presenting Author:

Authors: Swarts D, Van Suylen R, Den Bakker M, Van Oosterhout M, Thunnissen E,

Keywords: lung carcinoids, classification, histopathology, interobserver variation, orthopedia homeobox, MIB-1,

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