sacrococcygeal teratoma

Sacrococcygeal teratoma alone is diagnosed at birth in one out of 40,000 humans.

The most common tumor here is sacrococcygeal teratoma.

The most notable of these is sacrococcygeal teratoma, the single most common tumor diagnosed in babies at birth.

A number of tumors are known to involve the coccyx; of these, the most common is sacrococcygeal teratoma.

Presacral teratoma usually is considered to be a variant of sacrococcygeal teratoma.

It is a common complication of major surgery in the pelvis, such as for removal of sacrococcygeal teratoma and other tumors.

Like all teratomas, a sacrococcygeal teratoma has the potential to be malignant, and the standard of care requires long-term followup by an oncologist.

In particular, a pilonidal cyst in the gluteal cleft can resemble a sacrococcygeal teratoma.

A pelvic tumor (most notably a large sacrococcygeal teratoma), or surgery to remove the tumor, can damage this nerve permanently.

Rarely, coccydynia is due to the undiagnosed presence of a sacrococcygeal teratoma or other tumor in the vicinity of the coccyx.

Embryonal teratomas most commonly occur in the sacrococcygeal region: sacrococcygeal teratoma is the single most common tumor found in newly born humans.

Surgeries here include repair of rectal prolapse and anterior meningocele, radical perineal prostatectomy, removal of tumors including sacrococcygeal teratoma, and coccygectomy.

The most commonly diagnosed fetal teratomas are sacrococcygeal teratoma (Altman types I, II, and III) and cervical (neck) teratoma.

Extraspinal ependymoma (EEP), also known as extradural ependymoma, may be an unusual form of teratoma or may be confused with a sacrococcygeal teratoma.

In humans, coccygectomy is the treatment of last resort for coccydynia, but is considered a required treatment for sacrococcygeal teratoma and other germ cell tumors arising from the coccyx.

These include congenital diaphragmatic hernia, congenital cystic adenomatoid malformation, fetal hydronephrosis, caudal regression syndrome, mediastinal tumor, and sacrococcygeal teratoma with a large component inside the fetus.

De Backer A, Madern GC, Hakvoort-Cammel FG, et al.: Study of the factors associated with recurrence in children with sacrococcygeal teratoma.

Cancerous bone or soft tissue tumors (e.g. osteosarcoma, osteochondroma, fibrosarcoma, epithelioid sarcoma, Ewing's sarcoma, synovial sarcoma, sacrococcygeal teratoma, liposarcoma)

Altman RP, Randolph JG, Lilly JR: Sacrococcygeal teratoma: American Academy of Pediatrics Surgical Section Survey-1973.

Gabra HO, Jesudason EC, McDowell HP, et al.: Sacrococcygeal teratoma--a 25-year experience in a UK regional center.

Derikx JP, De Backer A, van de Schoot L, et al.: Long-term functional sequelae of sacrococcygeal teratoma: a national study in The Netherlands.

Rescorla FJ, Sawin RS, Coran AG, et al.: Long-term outcome for infants and children with sacrococcygeal teratoma: a report from the Childrens Cancer Group.

A 1992 case report of a baby with a sacrococcygeal teratoma (SCT) reported that the SCT had obstructed the outlet of the urinary bladder causing the bladder to rupture in utero and fill the baby's abdomen with urine (a form of ascites).