Case reports reveal distinct radiological characteristics of benign tumors confused with lung cancer, suggesting diagnostic improvement is needed.
INTRODUCTION: Bronchiolar adenoma/ciliated muconodular papillary tumors (BA/CMPTs) are rare benign tumors. Because their radiological appearance often resembles that of small peripheral lung cancers, preoperative differentiation remains challenging. Furthermore, BA/CMPTs may be misdiagnosed as adenocarcinomas during intraoperative frozen-section consultations. Here, we report two cases of resected BA/CMPTs with distinct radiological morphologies and discuss their clinicopathological characteristics compared with those of previously reported cases.
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Sugimoto et al. (2026) studied this question.
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