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Bone and soft tissue tumors presenting as sciatic notch dumbbell masses: A critical differential diagnosis of
Yoshihiro Matsumoto1, Tomoya Matsunobu1, Katsumi Harimaya1
1Yoshihiro Matsumoto, Tomoya Matsunobu, Katsumi Harimaya, Kenichi Kawaguchi, Mitsumasa Hayashida, Seiji Okada, Yukihide Iwamoto, Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
Aim:
To study the clinical findings and characteristic features in sciatic notch dumbbell tumors (SNDTs).
Methods:
We retrospectively reviewed the clinical outcomes and characteristic features of consecutive cases of SNDTs (n = 8).
Results:
Buttock masses occurred in three patients with SNDT (37.5%). Severe buttock tenderness and pain at rest were observed in seven patients with SNDTs (87.5%). Remarkably, none of the patients with SNDTs experienced back pain. Mean tumor size was 8.4 ± 2.0 cm (range, 3.9 to 10.6 cm) and part of the tumor mass was detected in 2 patients in the sagittal view of lumbar magnetic resonance imaging (MRI).
Conclusion:
The clinical information regarding to SNDTs is scarce. The authors consider that above mentioned characteristic findings may facilitate the suspicion of pelvic pathology and a search for SNDT by MRI or computed tomography should be considered in patients presenting with sciatica without evidence of spinal diseases.
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