Carcinoid
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![Lung_Neoplastic_Carcinoid10.jpg](/slides-13/slides/Lung_Neoplastic_Carcinoid10.jpg)
Comments:
Carcinoids are usually well-circumscribed, round to oval masses that often project into the bronchial lumen. An endobronchial component is seen in about half of typical carcinoids and one-third of atypical carcinoids. This image shows intact respiratory mucosa overlying the tumor. In some cases, it may undergo squamous metaplasia.