Papillary endolymphatic sac tumors: Imaging findings

S. K. Mukhrrji, M. Castillo, W. W. Lo, W. Nemek, J. S. Lewin, P. Pate

Research output: Contribution to journalArticle

Abstract

Purpose: To present (he CT, MR imaging, and angiographie findings in 20 paliems with papillary endolymphatic sac tumors (PELST). Materials and Methods: The clinical and imaging studies in 20 patients with a histological diagnosis of PELST were retrospectively reviewed. All patients underwent a combination of CT ( 18/20). MR imaging ( 15/20) and angiography ( 12/20). CT studies were evaluated for bone erosion, and central and peripheral calcification. MR imaging was evaluated for Tl W and T2W signal intensity, enhancement patterns, and presence of flow voids. Review of the angiographie studies determined blood supply to the tumors. Results: CT showed all tumors to be destructive and to contain intratumoral calcifications centered in the retrolabynnthine region. MR imaging appearance varied with the size of the lesion. 12/15 (80%) tumors demonstrated increased T1W signals. The location of this high signal was circumferential in small lesions (mean diameter <3 cm) and scattered throughout the lesion in advanced tumors. Flow voids were only seen in tumors with mean diameters > 2 cm. The blood supply arose predominantly from the external carotid artery (ascending pharyngeal artery [ 12/12|. and stylomastoid artery 112/12]). Large tumors had additional supply from the internal carotid and posterior circulation. Conclusions: PELST are destructive hypervascular lesions that arise from the retrolabyrinthine region of the temporal bone. Increased Tl W signals on nonenhanced MR imaging are commonly present and may help distinguish these lesions from other more common aggressive tumors that involve the temporal bone.

Original languageEnglish (US)
Pages (from-to)25
Number of pages1
JournalSkull Base Surgery
Volume7
Issue numberSUPPL. 1
StatePublished - 1997
Externally publishedYes

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Endolymphatic Sac
Neoplasms
Temporal Bone
Arteries
External Carotid Artery
Angiography
Bone and Bones

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Mukhrrji, S. K., Castillo, M., Lo, W. W., Nemek, W., Lewin, J. S., & Pate, P. (1997). Papillary endolymphatic sac tumors: Imaging findings. Skull Base Surgery, 7(SUPPL. 1), 25.

Papillary endolymphatic sac tumors : Imaging findings. / Mukhrrji, S. K.; Castillo, M.; Lo, W. W.; Nemek, W.; Lewin, J. S.; Pate, P.

In: Skull Base Surgery, Vol. 7, No. SUPPL. 1, 1997, p. 25.

Research output: Contribution to journalArticle

Mukhrrji, SK, Castillo, M, Lo, WW, Nemek, W, Lewin, JS & Pate, P 1997, 'Papillary endolymphatic sac tumors: Imaging findings', Skull Base Surgery, vol. 7, no. SUPPL. 1, pp. 25.
Mukhrrji SK, Castillo M, Lo WW, Nemek W, Lewin JS, Pate P. Papillary endolymphatic sac tumors: Imaging findings. Skull Base Surgery. 1997;7(SUPPL. 1):25.
Mukhrrji, S. K. ; Castillo, M. ; Lo, W. W. ; Nemek, W. ; Lewin, J. S. ; Pate, P. / Papillary endolymphatic sac tumors : Imaging findings. In: Skull Base Surgery. 1997 ; Vol. 7, No. SUPPL. 1. pp. 25.
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