Anlotinib for the treatment of pulmonary epithelioid inflammatory myofibroblastic sarcoma: a case report.

Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is a rare subtype of inflammatory myofibrosarcoma. Anlotinib has demonstrated efficacy in the treatment of sarcoma. Nevertheless, to our knowledge, its use in EIMS has not been reported. Herein, we present a case of pulmonary EIMS. The patient underwent two courses of chemotherapy with doxorubicin combined with ifosfamide; however, the treatment was switched to anlotinib due to leukocytopenia. After 11 months of treatment with anlotinib, the tumor was in partial remission. Subsequently, the patient developed an acute myocardial infarction, which resulted in the discontinuation of anlotinib. Four months after discontinuation, the tumor progressed and anlotinib therapy was resumed. Following treatment for 5 months, tumor assessment indicated partial remission until March 2024. During this period, the patient experienced an adverse effect (i.e. ostealgia), which led to two reductions in the dosage of anlotinib. This case report provides a novel strategy for treating EIMS.