Abstract
Background: Teratomas are a type of germ cell tumor, which are mostly benign, and dominative in adult females. Sacococcygeal teratomas are usually found in newborns or children, and can be detected prenatally; they are exceedingly rare in adults. We reported a case of a sacrococcygeal teratoma in adult female. Case presentation: A 26-year-old female was diagnosed with a presacral tumor 6 years ago. Pelvic computed tomography (CT) demonstrated a presacral heterogeneous tumor, containing multi-located cystic area and enhanced solid component with calcification. Magnetic resonance imaging (MRI) showed a presacral non-enhanced cystic lesion with solid component, 128 mm × 104 mm × 102 mm, which was suspected of having invaded the rectal wall, fifth sacral vertebra (S5), and coccyx. She underwent abdomino-sacral total excision of tumor with coccygectomy. Histopathological examination revealed a tumor with intricate admixture of ectodermal (epidermis, sebaceous glands and squamous), mesenchymal (cartilage, adipose tissue, blood vessels, nerves and skeletal muscle) and endodermal components (respiratory epithelium and intestinal epithelium) respectively. After 24 months of follow-up the patient was both clinically and radiologically disease free. Conclusions: Early complete excision was the preferred definitive modality of treatment for sacrococcygeal teratoma, and multi-staged excision and reconstruction resulted in successful and safe treatment in our case.
Highlights
BackgroundSacrococcygeal teratoma is the most common congenital neonatal tumor but rarely seen in adults
Teratomas are a type of germ cell tumor, which are mostly benign, and dominative in adult females
Sacococcygeal teratomas are usually found in newborns or children, and can be detected prenatally; they are exceedingly rare in adults
Summary
Sacrococcygeal teratoma is the most common congenital neonatal tumor but rarely seen in adults. Prevalence of sacrococcygeal teratoma varies from 1/14,900 to 1/40,000 live births in various series and occurs more often in girls, with female to male ratio of 34:1 [3] [4] [5] [6]. Most of the sacrococcygeal teratomas are cystic and benign and only 12% are malignant [7]. Teratomas are defined as tumors, which are composed of various elements including the mesoderm, endoderm, and ectoderm. Treatment consists of complete surgical resection and coccygectomy. Prognosis of sacrococcygeal teratoma depends on the extent of surgical resection and histopathological findings of tumor (benign or malignant)
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