Dermatomyositis - key to diagnosing ovarian cancer, monitoring treatment and detecting recurrent disease: Case report

•Young women with dermatomyositis are at high risk for underlying ovarian cancer.•Dermatomyositis symptoms can be used to assess treatment and recurrence of disease.•Immunosuppression can complicate postoperative recovery in ovarian cancer patients.•Ovarian cancer patients with dermatomyositis should have genetic testing.