Search Results for: suppuration

Histologic Diagnosis of Inflammatory Skin Diseases

Pyoderma gangrenosum

…volved infundibulum, and still later, the original infundibular character of the process no longer can be recognized because suppuration is so great. The elevated boggy border of the lesion is formed by dense diffuse infiltrates of neutrophils. That…

Histologic Diagnosis of Inflammatory Skin Diseases

Factitious dermatitis and panniculitis

…njected into the skin, a suppurative lobular panniculitis unlike any associated with authentic disease is induced. Extensive suppuration in one or more fat lobules in the absence of vasculitis or other cause apparent should alert to the possibility…

Histologic Diagnosis of Inflammatory Skin Diseases

Acne vulgaris

…, Propionibacterium acnes, Pityrosporum ovale and Pityrosporum orbiculare, and Demodex folliculorum. That happening provokes suppuration, which is followed by granulomatous inflammation and, eventually, by fibrosis. When fibrosis is extensive, the…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…he form of necrosis en masse, fat “microcysts,” and membranous fat necrosis, as well as of many foam cells 8. No suppuration in the subcutaneous fat 8. Suppuration prominent in the subcutaneous fat, especially in lobules 9. Eosinophils…

Multiple confluent reddish nodules

Multiple confluent reddish nodules

…lged epidermis (grenz zone). In contrast to other cutaneous/subcutaneous and deep mycoses, there are no areas of necrosis or suppuration, nor pseudocarcinomatous hyperplasia of the epidermis, unless the biopsy is taken at the edges of an ulcer. The…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…uch earlier stage, sebaceous glands were more numerous and infundibular cysts were even more formidable. The cysts ruptured, suppuration and granulomatous inflammation ensued, and fibrosis, seen here, followed. In short, rhinophyma begins with…

Histologic Diagnosis of Inflammatory Skin Diseases

Rosacea

…ociated with lymphocytes in infundibula Fully developed Perivascular infiltrates of lymphocytes and, sometimes, plasma cells Suppuration in some infundibula Well-circumscribed collections of epithelioid histiocytes, usually in peri-infundibular…

Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…the skin, e.g., those that occur secondary to trauma, such as scars, keloids, and dermatofibromas; those marked by extensive suppuration and subsequent degeneration of collagen, such as ruptured epidermal (infundibular) and follicular…