Τρίτη 27 Μαρτίου 2018

Pediatric Langerhans cell histiocytosis of the temporal bone: clinical and imaging studies of 27 cases

Abstract

Background

We aimed to evaluate the clinical and imaging presentations of Langerhans cell histiocytosis (LCH) in the pediatric temporal bone.

Methods

This retrospective study included 27 pediatric cases with pathological confirmed LCH of the temporal bone. The clinical and imaging features of the cases were analyzed. The involvement of ossicular chain and otic capsule was also evaluated.

Results

A total of 38 lesions (27 cases) with 11 bilateral involvement were identified. For the 27 cases, the most common complaint was periauricular swelling (12/27, 44.4%), followed by otorrhea (9/27, 33.3%) and otalgia (5/27, 18.2%). The mastoid process was the most common involved subsite (31/38, 81.6%) among the 38 lesions. Ten (26.3%, 10/38) lesions belonged to the group of the diffuse involvement, 22 (57.9%, 22/38) were divided into the group of partial involvement and six (15.8%,6/38) localized lesions with punched-out appearance. Erosion of ossicular chains and otic capsule were found in three and seven lesions respectively.

Conclusion

The results indicate that the most common subsite for LCH of the pediatric temporal bone was the mastoid process. The location and extent of pediatric LCH of the temporal bone varied a lot between each other. The ossicular chains usually remain intact and the erosion of otic capsule can occur in some lesions.



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