PMC9924590_01
Longitudinal high-resolution greyscale ultrasound image of the perineal region just medial to the ischial tuberosity
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High-resolution greyscale ultrasound demonstrated a well-circumscribed predominantly hypo-echoic 2 x 1 cm nodule in the subcutaneous tissue just medial to the ischial tuberosity (Fig. 1).
MRI pelvis - Axial T1 weighted image of the perineal region, demonstrating a low signal intensity lesion to the left of the midline in the superficial soft tissue of the perineum
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The lesion was hypointense on all sequences (Fig. 2).
Histological characteristics of perineal nodular induration demonstrating dense hyaline tissue and pseudocystic changes
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Histology revealed a combination of dense hyalinised fibrous tissue, surrounding oedematous fibrous tissue and pseudocystic area compatible with a cyclist nodule (Fig. 3).
PMC9924590_02
Pre- and post-intervention saddle pressure mapping demonstrating increased contact area, reduced peak pressures and more favourable pressure distribution
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