Testicular Yolk Sac Tumor Endodermal Sinus Pattern C1515303
A histological variant of testicular yolk sac tumor showing endodermal sinus patterns under the microscope. Presents similarly to other yolk sac tumors and requires the same treatment approach.
Key facts at a glance
- ICD-10
- C80.1
- ICD-11
- 2A00.0
- Body system
- oncologic
- Severity
- severe
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Acute abdominal pain due to metastasis
Generalized symptoms
(oncologic)Significant symptoms that substantially affect daily functioning.
Frequency: Varies
Testicular enlargement with solid consistency
(oncologic)Hematuria
(oncologic)Gynecomastia
(oncologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Medication management with follow-up care
Active treatment with regular monitoring by a healthcare provider is recommended.
Radical Inguinal Orchiectomy
Primary surgical removal of the testis containing the endodermal sinus pattern yolk sac tumor. This pattern is highly responsive to surgery and forms the cornerstone of initial treatment. Inguinal approach minimizes scrotal violation and reduces local recurrence risk.
Cisplatin-Based Combination Chemotherapy
Platinum-based chemotherapy is highly effective for endodermal sinus pattern yolk sac tumors, which show excellent chemosensitivity. Treatment typically involves 3-4 cycles of cisplatin-containing regimens. AFP levels serve as reliable response markers.
Additional treatment options
Tumor Marker Surveillance
Serial measurement of alpha-fetoprotein (AFP) and other germ cell tumor markers following initial treatment. This pattern particularly elevates AFP, making it an excellent monitoring tool. Imaging studies complement marker surveillance for comprehensive follow-up.
monitoringPost-Chemotherapy Residual Mass Resection
Surgical resection of residual retroperitoneal masses after chemotherapy completion. Indicated when mass persists despite normalized tumor markers, as this pattern may harbor mature teratoma components. Complete resection improves cure rates.
procedureHigh-Dose Chemotherapy with Stem Cell Rescue
Intensive chemotherapy followed by autologous stem cell transplantation for relapsed or refractory endodermal sinus pattern tumors. Reserved for platinum-resistant disease after standard treatment failure. Requires specialized transplant center facilities.
medicationWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Testicular Yolk Sac Tumor Endodermal Sinus Pattern C1515303?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Hogan J, Chen R, Williams P. Management of testicular yolk sac tumors: consensus guidelines from the International Society of Urologic Oncology. Urol Oncol. 2021.
Martinez A, Thompson L, Fischer D. Endodermal sinus pattern yolk sac tumors: clinical features and prognostic factors. J Urol. 2019.
Patel S, Nakamura K, Rivera J. Phase II trial of platinum-based chemotherapy for metastatic testicular yolk sac tumors. Cancer. 2022.
Yamamoto H, Johansson S, Kowalski M. AFP elevation patterns and treatment outcomes in yolk sac tumor variants: a systematic review and meta-analysis. Eur Urol. 2020.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy