PMC9537010_01
Clinical photographs (case 1). (a) Final defect (3 x 3.5 cm2) after radical excision of the complicated epidermoid cyst (EC) in the left axillary pouch. (b) Design of the hemi-keystone perforator island flap (KPIF) (4 x 4 cm2) on the medial side of the defect. (c) Successful coverage of the defect using the hemi-KPIF. (d) Postoperative photograph after 4 months of follow-up showing no EC recurrence and a hypertrophic scar.
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fig2
A 30-year-old man presented with an approximately 2 cm solid lesion with an indefinite border and surrounding inflammation in the left axillary pouch (Figure 2).
PMC9537010_02
Clinical photographs (case 5). (a) A chronic inflammatory skin lesion was diagnosed as hidradenitis suppurativa (HS) in the left axillary pouch. (b) Final defect (6 x 8 cm2) after radical excision of the lesion and design of a keystone perforator island flap (KPIF) (8 x 19 cm2) on the medial side of the defect. (c-d) Successful coverage of the defect using the Sydney melanoma unit modification KPIF with omega variation closure. (e-f) Postoperative photograph after 4 months of follow-up shows no HS recurrence and a hypertrophic scar.
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fig3
A 22-year-old man had a 2-year history of a recurrent inflammatory skin lesion in the left axillary pouch (Figure 3).
PMC9537010_03
Clinical photographs (case 8). (a) A chronic inflammatory skin lesion was diagnosed as a complicated epidermoid cyst (EC) in the left axillary pouch. (b) Final defect (3 x 4 cm2) after radical excision of the lesion and design of a keystone perforator island flap (KPIF) (3.5 x 8.5 cm2) on the medial side of the defect. (c) Successful coverage of the defect using the modified type II KPIF. (d) Postoperative photograph after 5 months of follow-up shows no EC recurrence and a linear scar.
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fig4
A 17-year-old boy presented with an approximately 2.5 cm solid lesion with an indefinite border and surrounding inflammation in the left axillary pouch (Figure 4).