Evaluation of the potential of active surveillance in metachronous cystadenolymphomas of the parotid gland

Introduction:

The aim of this study was to explore the potential of a wait-and-scan strategy for metachronous cystadenolymphoma of the parotid gland (PG).

Methods:

Retrospective analysis on all patients treated in an tertiary academic center with cystadenolymphoma of the PG from 2000 to 2017. Included was every patient with sonographic suspicion of metachronous cystadenolymphoma and a minimum follow-up of 12 months. Growth rate, number of metachronous lesions and onset of inflammatory symptoms were evaluated.

Results:

A total of 967 patients with histological confirmed cystadenolymphoma were treated during the examination period. Twenty-six patients with metachronous tumors were followed up by a wait-and-scan strategy. The mean follow-up time was 36.2 months. Metachronous tumors occurred on ipsilaterally in 3/26 cases, contralaterally in 22/26 cases (84.6%) and in one case on both sides (3.8%). The mean growth rate per lesion was 15.4% per year (range: -22.4% – 157.7%). There were no signs of inflammatory symptoms.

Conclusion:

The high variability in the behavior of metachronous cystadenolymphomas indicates the need for an individualized approach and close monitoring of sonographic features.

Publication History

Publication Date:
23 April 2019 (online)