Purulent Inflammation |
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| (1) |
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Deep folliculitis: note the infection is within the confines of an intact hair follicle. |
| (2) |
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Furunculosis: the hair follicle has ruptured, spreading infection into the dermis. |
| (3) |
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Remnant of hair shaft within the furuncle: free keratin from root sheath and hair shaft causes foreign body reaction and formation of sequestered foreign body granulomas. | |