(7.) Macdonald RL, Cusimano MD, Deck JH, Gullane PJ, Dolan EJ: Cerebrospinal fluid fistula secondary to ecchordosis physaliphora
Ecchordosis physaliphora (EP) is a benign congenital hamartoma of the ectopic notochordal remnant, accounting for 0.5-2% of all autopsies, and found in 1.5% of all magnetic resonance imaging (MRI) of the brain.
Endoscopic resection of a giant intradural retroclival ecchordosis physaliphora : s0 urgical technique and literature review.
The initial lesions might be benign chordal ectopias called ecchordosis physaliphora
which are encountered in asymptomatic adults with an incidence of 1%.
Other notochordal lesions include notochordal vestiges of the intervertebral disk and ecchordosis physaliphora (EP).
These were first described as an autopsy finding in 1982 and documented with the name of ecchordosis physaliphora vertebralis.
Ecchordosis physaliphora are ectopic, extraosseous notochordal lesions of embryologic origin, similar to notochordal vestiges of the intervertebral disk.
Benign notochordal cell tumor, chordomas, notochordal vestiges of the intervertebral disk, and ecchordosis physaliphora are all lesions of notochordal origin that share similar histologic and immunohistochemical characteristics.
Retroclival ecchordosis physaliphora: MR imaging and review of the literature.
A case of giant ecchordosis physaliphora: a case report and literature review.
Muller in 1958 linked the tumor to notochordal tissue and renamed it "ecchordosis physaliphora
" because of the presence of the physaliphorous cells.
(1) It was first described by Virchow in 1857 under the name of "ecchordosis physaliphora
" and in 1894, Ribbert defined as a malignant tumor arising from embryonic remains of the notochord.