Histologic Diagnosis of Inflammatory Skin Diseases

Images

…undibulitis, spongiotic + 10.98.5B: Scale-crusts above an infundibulum = Seborrheic dermatitis ┬áIf additional sections were cut deeper in the specimen from which this section was taken, it is likely that scale-crusts would be seen to be situated…

Differential Diagnosis in Dermatopathology

Discussions

…ually presents itself on a face as a widely dilated ostium of infundibulum plugged by horny material. The age of patients with dilated pore ranges from the 20’s to the 80’s, but most are in their 50’s and 60’s. The commonest s…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…in the dermis, also as “flame figures” and in an infundibulum + 10.5.38C + 10.5.38D = Response to an arthropod assault The 6-month-old boy from whom this specimen came had “unquestionable insect “bites” tha…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…infundibular epidermis. Sometimes, however, as shown here, an infundibulum may be caught up in the process. The neutrophils are an evidence of acuteness, whereas the psoriasiform acanthosis and density of the dermal infiltrate are signs of chronicity…

Differential Diagnosis in Dermatopathology

Acne vulgaris, erythematous papule vs. Rosacea, erythematous papule

An inflammatory process that often begins as a suppurative folliculitis manifested clinically as pustules. It rapidly extends to become ulcers marked at their periphery by boggy tissue. The skin disease is associated commonly with inflammatory bowel…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Follicular Occlusion Triad?

…are not follicles, but components of epidermis. Beneath each infundibulum and in continuity with it, resides a follicle that consists of an isthmus, stem, and bulb, in descending order. Except for anatomic site, acne conglobata, dissecting celluliti…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

…hat phenomenon pertained solely to surface epidermis. But the infundibulum is just as much epidermis as is surface epidermis, the two having the very same appearance histopathologic; that being the case, it should come as no surprise that that funnel…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…orneocytes = Fox-Fordyce disease Spongiosis in the wall of an infundibulum near the site where an apocrine duct enters that part of the epidermis is typical of Fox-Fordyce disease. The abnormality basic, however, seems to be one of aberrant cornifica…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…of acantholytic dyskeratotic cells in the spinous zone of an infundibulum = Grover’s disease As a rule, Grover’s disease, like Darier’s disease, has no predilection for infundibular epidermis, favoring instead surface epidermis. Th…