Richter K
Geburtshilfe Frauenheilkd. 1977 Sep;37(9):771-5.
A woman, born in 1923, suffered since menarche of pain of the vertebra and has had a headache during menstrual periods. 1963 she developed a transverse lesion of the cord with an incomplete paraplegia because of an endometriosis externa of spinal canal. After a 12 years symptomless interval, she complained again of a transverse lesion. Histological examination disclosed an endometrioid carcinoma with infiltration of vertebral bodies. The rare occurrence of malignant transformation in endometriotic tissue is pointed out.