Search Results for: infundibulum

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…that from consideration. 10.98.5A: Perivascular dermatitis and infundibulitis, spongiotic + 10.98.5B: Scale-crusts above an infundibulum = Seborrheic dermatitis If additional sections were cut deeper in the specimen from which this section was…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…d infundibulitis + 10.5.38B: Lymphocytes and eosinophils mostly 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…

Differential Diagnosis in Dermatopathology

Acne vulgaris, erythematous papule vs. Rosacea, erythematous papule

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,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Follicular Occlusion Triad?

…licles, but, in actuality, they are based in infundibula, which 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….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Trichodiscoma Related to the Hair Disk and Merkel-Cell Neoplasm to Merkel Cells?

…le and of mantles of follicles in particular. Mantles, also described first by Felix Pinkus, emerge from the junction of the infundibulum and isthmus and, in sections cut vertically, are seen to hang as cords of undifferentiated epithelial cells…

Histologic Diagnosis of Inflammatory Skin Diseases

Foreign body reaction

…terial that is “foreign,” e.g., sebaceous secretion, cornified cells, bacteria, yeast, and mites from a ruptured infundibulum, but many times their efforts are in vain; silica, suture, material of tattoos, urates, and splinters resist…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…bules attached to a single sebaceous duct 5. Sebaceous lobules open to a short tubule that serves as both sebaceous duct and infundibulum 6. Sebaceous ducts open into one or several widely dilated infundibula 6. Sebaceous ducts enter a single…

Histologic Diagnosis of Inflammatory Skin Diseases

Majocchi’s granuloma

…liated with granulomatous inflammation. Causative hyphae are discernible in cornified cells only, those usually being of the infundibulum and the follicle, of the latter being the hair shaft and the inner sheath. Sometimes hyphae are identifiable in…

Histologic Diagnosis of Inflammatory Skin Diseases

Infundibulitis secondary to agents topical

…ar contents until that time “stopped up.” The inflammatory process usually expresses itself as suppuration in an infundibulum. What distinguishes some suppurative infundibulitides induced by agents topical from suppurative…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…dominance of lymphocytes in and around infundibula dilated by corneocytes = 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…