Search Results for: infundibulo-sebaceous-apocrine unit

Dermatoscopy: A nodule on a woman’s leg

Dermatoscopy: A nodule on a woman’s leg

Clinical presentation A 61-year-old white female presented with a 7 x 4 mm nodule that was firm to palpation on her right leg (Figure 1) of 5 months’ duration. The lesion was not painful, but bleeding with minimal trauma. Figure 1. The lesion is…

Histologic Diagnosis of Inflammatory Skin Diseases

Foreign body reaction

…cess is granulomatous. Sometimes histiocytes are able to ingest and digest the material that is “foreign,” e.g., sebaceous secretion, cornified cells, bacteria, yeast, and mites from a ruptured infundibulum, but many times their efforts…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Common Baldness—an Inflammatory Disease?

…howed normal follicular density, reduced shaft diameter, and increased percentages of telogen follicles and telogen germinal units. An inflammatory reaction was seen in 75% of patients and focal fibrosis was seen in 25%. Diffuse dermal fibrosis with…

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

…, Noto G. Pseudomonas aeruginosa folliculitis after shower/bath exposure. Int J Dermatol 2000;39(4):270-73. Bibliography for infundibulofolliculitis Heymann WR. Infundibulofolliculitis of the neck. Cutis 2002;70:178–180. Owen WR, Wood C. Disseminate…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…of germinative cells with no indubitable signs of advanced follicular differentiation; no associated follicular papillae 3. Sebaceous cells and lobules often accompany follicles induced by histiocytes and fibrocytes 3. No sebaceous cells or lobules…

Differential Diagnosis in Dermatopathology

Discussions

…rhinophyma, the most dramatic presentation of rosacea, bulbous enlargement of a nose results from tremendous hyperplasia of sebaceous lobules and formation of many infundibular cysts that rupture, thereby sending contents of infundibula into the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Discoid Lupus Erythematosus versus Systemic Lupus Erythematosus? II

…nt to its termination, that is, a chronic inflammation or infiltration limited solely to the skin, and affecting chiefly the sebaceous glands and the parts immediately adjacent to them, ending in complete absorption, or in a cicatricial contraction…

Differential Diagnosis in Dermatopathology

Images

Apocrine (clear-cell) hidradenoma Eccrine (poroid) hidradenoma…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…r cytoplasm sometimes present in loci 10. No epithelial cells with pale or clear cytoplasm 11. Infundibular, follicular, and sebaceous differentiation sometimes 11. No infundibular, follicular, or sebaceous differentiation 12. Stroma does not…