PMC5513117_01
Right lateral elbow mass with distension of overlying skin
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Fig1
Mass measured 4 cm by 6 cm and there were no signs of excoriations nor fistula (Fig. 1). 
MRI image; T1 coronal view showing cystic lesion with fine capsule () in close relation with flexor carpi ulnaris ()
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Fig2
Magnetic resonance Imaging (MRI) depicted a unilocular cyst with multiple septations giving it a multivesicular or rosette appearance, confined to the soft tissues, adjacent to the medial elbow muscles without infiltrating bone nor surrounding neurovascular structures (Figs. 2 and 3).  
MRI image; T2 axial view showing unilocular cyst with thin septations
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Fig3
Magnetic resonance Imaging (MRI) depicted a unilocular cyst with multiple septations giving it a multivesicular or rosette appearance, confined to the soft tissues, adjacent to the medial elbow muscles without infiltrating bone nor surrounding neurovascular structures (Figs. 2 and 3).  
Peroperative image showing careful pericystectomy
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Fig4
Care was taken to remove the mass en block without perforating the cyst wall, through meticulous pericystectomy along surrounding muscle fibers (Fig. 4).
Surgical specimen with hydatid sand after opening of cyst
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Fig5
The cyst was multivesicular containing daughter cysts and were filled with muddy substance typical of hydatid disease (Fig. 5).
Surgical wound with extensive soft tissue loss
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Fig6
Wound could not be closed due to massive soft tissue loss (Fig. 6).   