Different types of trochlear apparatus calcification: Evaluation with multidetector computed tomography (MDCT)
Abstract
Aim: Trochlear apparatus calcification (TAC) can be an incidental finding in multidetector computed tomography (MDCT) scans. TAC may be misdiagnosed as a foreign body especially in trauma patients. In this study we aim to determine the incidence and types of TAC with cranial and paranasal MDCT scans.
Materials and Methods: Consecutive 452 MDCT scans were evaluated retrospectively. Repeated exams and patients with orbital wall fracture history were excluded. CT scans were obtained by a 64-slice scanner with 0.5 mm slice thickness. Reformatted and three-dimension volume rendered images in bone window were used to assess the calcification presence and type.
Results: Four hundred forty-one MDCT exams included to study. TACs detected in 31 (7.5%) subjects. TAC was unilateral in 24 (77.4%) and bilateral in seven (22.6%) subjects. There was no significant correlation with aging (p=0.681) and between genders (p=0.808). “Dot-like” TAC was the most common type (n=12, 31.6%). The other types were “inverted-U” (n=11, 28.9%), “linear” (n=8, 21%), “comma” (n=6, 15.6%), respectively. Eight (21%) of TACs were attaching the orbital wall, mostly in “comma” type.
Conclusion: The TAC incidence in our study was compatible with literature. Four different types of TAC, including, “dot-like”, “inverted U”, “linear” and “comma” types detected. TACs were usually discrete from the orbital wall however they were occasionally attached. “Linear” type TAC and attachment to orbital wall described for the first time in this study. Knowledge of the TAC appearance may be helpful to differentiate TACs from foreign bodies.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
Sağlık Kurumları Yönetimi
Bölüm
Araştırma Makalesi
Yazarlar
Erdoğan Bülbül
*
Balıkesir University Faculty of Medicine, Department of Radiology, Balıkesir
0000-0002-1136-9407
Türkiye
Alper Yazıcı
Balıkesir University Faculty of Medicine, Department of Ophthalmology, Balıkesir
0000-0002-1367-240X
Türkiye
Bahar Yanık
Balıkesir University Faculty of Medicine, Department of Radiology, Balıkesir
0000-0003-3358-7330
Türkiye
Gülen Demirpolat
Balıkesir University Faculty of Medicine, Department of Radiology, Balıkesir
0000-0002-9639-2672
Türkiye
Yayımlanma Tarihi
1 Aralık 2017
Gönderilme Tarihi
16 Şubat 2016
Kabul Tarihi
11 Nisan 2016
Yayımlandığı Sayı
Yıl 2017 Cilt: 56 Sayı: 4