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Lung AdenoCA : Signet Ring-cell Pattern

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Comments:
The term signet ring adenocarcinoma has been dropped from the 2015 WHO classification of lung tumors. However, the presence of signet ring cells is recognized as a feature in the final diagnosis. This case had micropapillary and lepidic growth patterns. Small foci of signet ring cells were present throughout the tumor.

slide 120 of 126