A Rare Case of a Primary Isolated Intraperitoneal Teratoma With a Yolk Sac Tumor Component in a Three-Year-Old Boy

Raj M Dongol ¹, Neera Pathak ², Moni Subedi ²

⁰Department of Pathology and Laboratory Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, USA.

Cureus +

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November 24, 2025

View abstract on PubMed

Summary

Primary isolated intraperitoneal teratoma with yolk sac tumor is rare. This case highlights the importance of identifying malignant components for effective management and favorable outcomes in pediatric oncology.

Area Of Science

Pediatric Oncology
Surgical Pathology

Background

Primary isolated intraperitoneal teratomas are exceptionally rare pediatric tumors.
The coexistence of yolk sac tumor components within these teratomas is even more uncommon, presenting diagnostic and therapeutic challenges.

Purpose Of The Study

To report a rare case of primary isolated intraperitoneal teratoma with a yolk sac tumor component in a pediatric patient.
To emphasize the diagnostic difficulties and critical role of identifying malignant elements in teratomas for guiding treatment.

Main Methods

Case presentation of a three-year-old boy with the diagnosed condition.
Complete surgical excision of the tumor.
Adjuvant chemotherapy administration.
Histopathological evaluation for definitive diagnosis.

Main Results

The patient underwent successful surgical excision and adjuvant chemotherapy.
A favorable clinical outcome was achieved.
Histopathological analysis confirmed the presence of a yolk sac tumor component within the teratoma.

Conclusions

Accurate histopathological evaluation is crucial for identifying malignant components in teratomas.
Early identification of elements like yolk sac tumor is essential for appropriate management strategies.
Multidisciplinary approach involving surgery and chemotherapy can lead to favorable outcomes in complex pediatric tumors.

Keywords:

intraperitoneal isolated primary teratoma yolk sac tumor