Typical and atypical carcinoid tumors of the lung: a clinicopathological correlation of 783 cases with emphasis on histological features.

Abstract:

:We present 783 surgical resections of typical and atypical carcinoid tumors of the lung identified in the pathology files of 20 different pathology departments. All cases were critically reviewed for clinical and pathological features and further correlated with clinical outcomes. Long-term follow-up was obtained in all the patients and statistically analyzed to determine significance of the different parameters evaluated. Of the histopathological features analyzed, the presence of mitotic activity of 4 mitoses or more per 2 mm2, necrosis, lymphatic invasion, and lymph node metastasis were identified as statistically significant. Tumors measuring 3 cm or more were also identified as statistically significant and correlated with clinical outcomes. Based on our analysis, we consider that the separation of low- and intermediate-grade neuroendocrine neoplasms of the lung needs to be readjusted in terms of mitotic count as the risk of overgrading these neoplasms exceeds 10% under the current criteria. We also consider that tumor size is an important feature to be considered in the assessment of these neoplasms and together with the histological grade of the tumor offers important features that can be correlated with clinical outcomes.

journal_name

Hum Pathol

journal_title

Human pathology

authors

Moran CA,Lindholm KE,Brunnström H,Langman G,Jang SJ,Spagnolo D,Chai SM,Laycock A,Falconieri G,Pizzolitto S,de Pellegrin A,Medeiros F,Edmunds L,Catarino A,Cunha F,Ro J,Pina-Oviedo S,Torrealba J,Coppola D,Petersson F

doi

10.1016/j.humpath.2020.02.005

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

98-109

eissn

0046-8177

issn

1532-8392

pii

S0046-8177(20)30046-0

journal_volume

98

pub_type

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