BACKGROUND
Sacrococcygeal teratomas (SCTs) are tumors that emerge in the sacrococcygeal area and contain tissue from all three germ layers. SCT affects about 1 in every 35,000–40,000 live births, with malignant transformation becoming more common as the patient gets older. Ultrasound helps in prenatal diagnosis. Surgical resection is the mainstay of treatment.
OBSERVATIONS
A couple gave birth to a neonate with a small mass over his sacral region that progressively increased in size. Diagnostic magnetic resonance imaging was performed, and a diagnosis of giant SCT was established. Complete resection with flap reconstruction was performed. In regular follow-up, he is in a good state of health.
LESSONS
One of the most common tumors in infancy, SCT should be carefully diagnosed. SCT is often confused with neural tube defects such as myelocystocele or myelomeningocele. Complete resection with appropriate reconstruction can ensure better treatment, and close follow-up until adulthood is recommended to keep a close view on its possible recurrence and to improve prognosis. Postoperative complications such as infection, bleeding, and urethral complications should be carefully watched.
Malignant adnexal tumors of skin are rare. Sebaceous carcinoma—a rare and aggressive cutaneous tumor—is frequently located in the periorbital region. Malignant adnexal tumors of sebaceous carcinoma type on trunk with axillary lymph node and distant metastasis in young adult is rare. The incidence of extraocular sebaceous carcinoma has been expected to be 0.06 per 100 000 person-years with an increased incidence in elderly patients and men. With a note of mimicking benign dermatologic conditions, definitive diagnosis of sebaceous carcinomas is often hindered, increasing morbidity and mortality for patients. Herein, we present a case of a 35-year-old man with a large ulcero-proliferating lesion of trunk region previously resected for a small swelling and eventually presented with the recurrent lesion and diagnosed as sebaceous carcinoma of trunk with bilateral axillary lymphnode and distant bone metastasis demonstrating several diagnostic and management challenges.
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