Lepidic predominant adenocarcinoma (LPA) of lung, formerly known as non-mucinous bronchoalveolar carcinoma, is a subtype of invasive adenocarcinoma of the lung. This entities now replaces some of the lesions which fell under the now defunct term "bronchoalveolar carcinoma (BAC)". These tend to be non-mucinous lesions with > 5mm of invasion. This is usually a histological diagnosis and is applied when the lepidic component dominates in an invasive adenocarcinoma lesion.
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