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Small Cell Carcinoma of the Ovary, Hypercalcemic Type

Aggressive Young-Adult Ovarian Malignancy Linked to SMARCA4 Mutations

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Onkoloji department. Book Appointment →

What is Small Cell Carcinoma of the Ovary, Hypercalcemic Type?

A rare aggressive ovarian neoplasm of young women historically termed small cell carcinoma of the ovary, hypercalcemic type

Driven by inactivating mutations of SMARCA4 (BRG1), a SWI/SNF chromatin remodeling complex member

Histopathology shows sheets of small cells with follicle-like spaces and rare large cell variants

Approximately two-thirds of patients present with paraneoplastic hypercalcemia

Median age at diagnosis is approximately 24 years with poor overall survival

Symptoms

Abdominal or pelvic pain, distension, and palpable mass in young women
Symptoms of hypercalcemia including nausea, vomiting, polyuria, and confusion
Weight loss, fatigue, and constitutional symptoms reflecting advanced disease
Menstrual irregularities or postmenopausal bleeding rarely
Dyspnea or pleural effusion if metastatic spread to thorax

Risk Factors

Young age (median 24 years) with most cases under 40
Germline SMARCA4 pathogenic variants causing rhabdoid tumor predisposition syndrome
Family history of small cell carcinoma of the ovary or rhabdoid tumors
Female reproductive age group with rare cases in adolescents and children
No clear environmental, hormonal, or reproductive risk factors are established

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Pelvic mass with hypercalcemia in adolescent or young adult women
  • Rapidly progressive abdominal symptoms in patients under 40
  • Family history suggesting rhabdoid tumor predisposition syndrome
  • Need for fertility-sparing assessment in young women
  • Recurrence after primary surgery requiring multidisciplinary care

Treatment Methods

01
Surgical staging with hysterectomy or unilateral salpingo-oophorectomy in early-stage fertility-sparing approach
02
Multiagent platinum-based chemotherapy with etoposide and additional agents
03
High-dose chemotherapy with autologous hematopoietic stem cell rescue in selected cases
04
Treatment of hypercalcemia with hydration, bisphosphonates, and calcitonin
05
Genetic counseling, germline SMARCA4 testing, and clinical trial enrollment for refractory disease

Which Department to Visit?

You can visit our Onkoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.