{Reference Type}: Case Reports
{Title}: Hide-and-Seek With Spindle-Cell-Component-Poor Metaplastic Thymoma.
{Author}: Ražanskienė G;Landsbergis V;Bertašius V;Norvilas R;Mickys U;
{Journal}: Cureus
{Volume}: 16
{Issue}: 5
{Year}: 2024 May
暂无{DOI}: 10.7759/cureus.60136
{Abstract}: Metaplastic thymoma is a rare biphasic thymic tumor with indolent behavior and recurrent YAP1::MAML2 gene rearrangement. Although the diagnosis of this tumor is usually straightforward based on hematoxylin and eosin (H&E) findings alone, cases with scant spindle-cell ("pseudosarcomatous stroma") components can be easily confused with more commonly occurring type A thymoma. We present a case of metaplastic thymoma with a sparse stroma-like spindle-cell component, discussing its histological and immunohistochemical hints and drawing attention to the visual similarity to type A thymoma. This is also the first published case of metaplastic thymoma with associated psoriasis.