Search Results for: infundibulum

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…8221; “peri-infundibulosis,” and “perifolliculosis” + 11.14.11B: Lymphocytes in the dermis and in an infundibulum replete with mucin = Mycosis fungoides, alopecia mucinosa expression Epithelial mucinosis is the sine qua non…

Melanocytic nevi and melanoma: overlapping criteria—the degree is the key

Melanocytic nevi and melanoma: overlapping criteria—the degree is the key

…(H&E) Crowded solitary and nested confluent atypical melanocytes within the ulcerated and crusted surface epidermis and infundibulum overlying dermal severe solar elastosis, patchy lymphocytes and numerous melanophages. (D) Melan A outlines…

Differential Diagnosis in Dermatopathology

Perforating folliculitis vs. Elastosis perforans serpiginosa

An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules,…

Differential Diagnosis in Dermatopathology

Discussions

…r’s disease. The “perforation” seen by microscopy is an inevitable consequence of suppuration in a dilated infundibulum in which neutrophils are so numerous that they cause a breach to form in the wall of the funnel-shaped…

Histologic Diagnosis of Inflammatory Skin Diseases

Acne vulgaris

…ous secretion and sebum on the other. Acne vulgaris, when pustular, is a suppurative infundibulitis, not a folliculitis, the infundibulum being epidermal, not follicular. As a rule, the follicle is unaffected in acne vulgaris. Sebaceous secretion is…

Histologic Diagnosis of Inflammatory Skin Diseases

Arthropod assaults

…ich, not surprisingly, sometimes is caught up in the process. Not uncommonly, the actual site of the bite is an ostium of an infundibulum, that structure containing delicacies loved by insects, among them being bacteria, yeasts, mites, and lipids…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…er being the result of rubbing forcefully a discrete locus made itchy by virtue of the effects of neutrophils spewed from an infundibulum on nerve endings, the situation occurring mostly in patients on renal dialysis and in some with diabetes, the…

Histologic Diagnosis of Inflammatory Skin Diseases

Our Definition of “Inflammation” and “Inflammatory Disease”

…s an inflammatory one. Another corollary is keratosis pilaris, in which the plug of corneocytes may penetrate the wall of an infundibulum and, as a consequence, call forth neutrophils followed by lymphocytes and, sometimes, histiocytes and later…