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Yolk Sac Tumor: Diagnosis and Management of Endodermal Sinus Tumor

Comprehensive treatment of yolk sac tumor germ cell malignancy with risk-stratified chemotherapy and surgical approach

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 Yolk Sac Tumor: Diagnosis and Management of Endodermal Sinus Tumor?

Yolk sac tumor (endodermal sinus tumor) is non-seminomatous germ cell tumor producing alpha-fetoprotein.

Schiller-Duval bodies on histology are pathognomonic finding for yolk sac tumor.

Tumor occurs in gonadal and extragonadal sites including sacrococcygeal region, mediastinum, CNS.

Pure yolk sac tumor is most common germ cell tumor in young children.

Alpha-fetoprotein serves as critical tumor marker for diagnosis and surveillance.

Symptoms

Painless mass in gonadal location or extragonadal site represents most common presentation.
Sacrococcygeal teratoma in newborns may transform to yolk sac tumor with elevated AFP.
Abdominal mass, distension, ascites manifest ovarian or retroperitoneal disease.
Respiratory symptoms with mediastinal mass represent mediastinal yolk sac tumor.
Markedly elevated alpha-fetoprotein levels characterize disease and guide diagnosis.

Risk Factors

Pediatric age represents highest risk period for pure yolk sac tumor occurrence.
Cryptorchidism and gonadal dysgenesis increase germ cell tumor risk including yolk sac tumor.
Sacrococcygeal teratoma in newborns has risk of malignant transformation to yolk sac tumor.
Klinefelter syndrome and other genetic conditions associate with mediastinal germ cell tumors.
Adolescent and adult yolk sac tumor typically presents as component of mixed germ cell tumor.

When to See a Doctor?

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

  • Pediatric mass with elevated alpha-fetoprotein warrants urgent specialized evaluation.
  • Sacrococcygeal teratoma resected in infancy requires alpha-fetoprotein surveillance.
  • Specialized pediatric or adult germ cell tumor center referral optimizes outcomes.
  • Severe respiratory symptoms with mediastinal mass require urgent biopsy and treatment.
  • Multidisciplinary care including pediatric or medical oncology, surgical oncology, radiation essential.

Treatment Methods

01
Surgical resection of localized disease with appropriate margins represents primary treatment.
02
BEP (bleomycin, etoposide, cisplatin) chemotherapy for advanced or metastatic disease.
03
Pediatric protocols may use carboplatin instead of cisplatin reducing nephrotoxicity.
04
Alpha-fetoprotein monitoring during and after treatment guides response assessment.
05
Comprehensive multidisciplinary care with pediatric or medical oncology, surgical oncology, radiation oncology, fertility preservation considerations, alpha-fetoprotein surveillance during and after treatment, imaging surveillance per stage and protocol, late effects monitoring particularly for cisplatin-treated patients including ototoxicity, nephrotoxicity, neuropathy, secondary malignancy surveillance, specialized pediatric supportive care, and survivorship care addressing long-term effects of platinum-based chemotherapy provides excellent outcomes with cure rates exceeding 90% in most patients with yolk sac tumor.

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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