Table 1.
Extra-sacrococcygeal location of pilonidal sinus: clinical features
| Patient | Gender | Age (y) | Lesion site | Clinical diagnosis | Hair removed | Type of hair removal | Recurrence | Comments |
|---|---|---|---|---|---|---|---|---|
| 1 | F | 19 | Sternum | SC | - | - | Yes | - |
| 2 | M | 27 | Abdomen | SC | - | - | - | - |
| 3 | M | 25 | Abdomen | - | - | - | - | |
| 4 | M | 20 | Abdomen | SC | No | - | No | Granuloma |
| 5 | M | 29 | Neck | SC | Yes | Electric razor | No | - |
| 6 | F | 27 | Groin | HS | Yes | Razor | - | - |
| 7 | M | 19 | Axilla | SC | Yes | Razor | - | - |
| 8 | F | 26 | Abdomen | Abscess | - | - | No | - |
| 9 | F | 22 | Axilla | LN | Yes | Razor | No | - |
| 10 | F | 28 | Groin | SC | Yes | Wax | No | - |
| 11 | F | 37 | Breast | Abscess | No | - | No | - |
| 12 | M | 42 | Axilla | LN | Yes | Razor | No | - |
| 13 | F | 17 | Groin | Abscess | No | Wax | Yes | - |
| 14 | F | 17 | Sternum | SC | Yes | - | - | - |
| 15 | M | 39 | Neck | Abscess | Yes | Razor | No | - |
| 16 | F | 43 | Abdomen | Abscess | No | - | - | - |
| 17 | M | 27 | Scalp | SC | - | - | - | - |
| 18 | M | 20 | Scalp | Cyst | Yes | Razor | - | - |
| 19 | M | 45 | Axilla | LN | Yes | Razor | No | - |
| 20 | F | 25 | Axilla | LN | Yes | Razor | - | - |
| 21 | M | 27 | Groin | SC | Yes | Razor | - | - |
HS, hidradenitis suppurativa; LN, lymph node; SC, sebaceous cyst.