Search Results for: infundibulitis

Histologic Diagnosis of Inflammatory Skin Diseases

Sebaceous Units

…nd Propionibacterium granulosum, are present in sebum and are thought to be important in the pathogenesis of the suppurative infundibulitis of acne vulgaris. Although sebaceous glands are apparent readily in sections of tissue of newborn skin, they…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.26.1A: Perivascular dermatitis and peri-infundibulitis, lymphocytes predominant + 10.26.1B: Many thick, brightly eosinophilic elastic fibers beneath and within an infundibular channel. + 10.26.1C + 10.26.1D + 10.26.1E + 10.26.1F =…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…crusts, at repeatable intervals 15. No spongiosis in infundibular epidermis 15. Spongiosis in infundibula often 16. No peri-infundibulitis or perifolliculitis 16. Peri-infundibulitis and perifolliculitis common 17. No eccrine adenitis 17. Eccrine…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatitis herpetiformis

…n they are clinical. Dermatitis herpetiformis-like drug eruption consists of bullae arranged randomly rather than in groups. Infundibulitis (“folliculitis”) is pustular rather than vesicular. Insect “bites” may be disposed in…

Histologic Diagnosis of Inflammatory Skin Diseases

Apocrine Units

…0;apocrine regions,” i.e., axillae and pubis, and, therefore, really is an abnormality of epidermis rather than a malady of apocrine units per se. Hidradenitis suppurativa also is a misnomer; it is a suppurative infundibulitis that affects…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…llenge in differential diagnosis of lichen planopilaris is traction alopecia, which also presents itself as a lichenoid peri-infundibulitis and perifolliculitis of lymphocytes and ends with alopecia that is permanent. As a rule, the bandlike…

Differential Diagnosis in Dermatopathology

Lichen nitidus vs. Lichen striatus

An inflammatory process, caused by the spirochete Treponema pallidum, that tends to evolve through three stages, namely, primary (typified usually by a solitary chancre), secondary (characterized by widespread macules and papules on skin and mucous…

Histologic Diagnosis of Inflammatory Skin Diseases

Grover’s disease

…not localized to the trunk, but favor sites exposed and often present themselves as papulovesicles and vesicles. Suppurative infundibulitis is characterized by pustules that are pierced by a hair. Scabies favors webs and may be associated with…

Histologic Diagnosis of Inflammatory Skin Diseases

Infundibulofolliculitis, disseminate and recurrent

…of follicles Individual lesions Pinpoint skin-colored papules Course Protracted Differential diagnosis clinical Suppurative infundibulitis differs because the basic lesion is a pustule. Findings histopathologic Fully developed Superficial…