Complications Maternal complications of pregnancy may include mirror syndrome. Maternal complications of delivery may include a Cesarean section or, alternatively, a vaginal delivery with mechanical dystocia. Complications of the mass effect of a<unk>  in general are addressed on the<unk>  page. Complications of the mass effect of a large<unk>  may include hip dysplasia, bowel obstruction, urinary obstruction, hydronephrosis and hydrops fetalis. Even a small<unk>  can produce complications of mass effect, if it is presacral (Altman Type IV). In the fetus, severe hydronephrosis may contribute to inadequate lung development. Also in the fetus and newborn, the anus may be imperforate. Later complications of the mass effect and/or surgery may include neurogenic bladder, other forms of urinary incontinence, fecal incontinence, and other chronic problems resulting from accidental damage to or sacrifice of nerves and muscles within the pelvis. Removal of the coccyx may include additional complications. In one review of 25 patients, however, the most frequent complication was an unsatisfactory appearance of the surgical scar. Late effects Late effects are of two kinds: consequences of the tumor itself, and consequences of surgery and other treatments for the tumor. Complications of not removing the coccyx may include both recurrence of the<unk>  and metastatic cancer. Late malignancies usually involve incomplete excision of the coccyx and are adenocarcinoma.Although functional disability in survivors is common, a small comparative study found a nonsignificant difference between<unk>  survivors and a matched control group. In rare cases, pelvic scarring may necessitate that a pregnant woman who is a<unk>  survivor deliver her baby by Cesarean section.
Sacrococcygeal teratoma
Myxoid cyst
Gonadoblastoma
Pineal gland cyst
Ectopic testis
Luteoma
Chordoma
Hydrocele testis