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Yolk Sac Tumor : Microcystic Pattern

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Intracellular vacuoles and microcystic areas may sometimes resemble lipoblasts; however, the tumor cells do not contain lipid. Microcystic pattern often coexists with other architectural patterns. It is now believed based on the recent studies that yolk sac tumor is a unilaterally developed teratoma that attempts to recapitulate the appearance of embryonic yolk sac.

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