Long-term remission after multimodal therapy in metastatic small cell carcinoma of the ovary, hypercalcemic type: A case report.

BACKGROUND: Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), is an extremely rare and aggressive ovarian malignancy that predominantly affects young women. Prognosis is stage-dependent, with a 5-year overall survival (OS) of approximately 20% in advanced stages (II-IV). Treatment typically involves a multimodal approach.Case Presentation.We present the case of a 24-year-old woman diagnosed with stage IV SCCOHT presenting multiple pulmonary nodules and enlarged retroperitoneal lymph nodes. Following standard treatment protocols, including surgery, chemotherapy and high-dose chemotherapy with autologous stem cell rescue, she achieved a complete response and has remained in remission for over five years despite initial pulmonary metastases. Given the rarity of SCCOHT, management was guided by recommendations and through the expertise of a national reference center.

CONCLUSION: This case highlights that, while durable remission is possible, intensive multimodal therapy is required, and SCCOHT survivors face significant long-term challenges. A comprehensive, multidisciplinary survivorship approach is essential to optimize long-term outcomes and quality of life, in accordance with current guidelines.