Search Results for: comedo

A Clinical Atlas of 101 Common Skin Diseases

Acne Vulgaris

…ase of infundibulosebaceous units, especially infundibula, that may manifest itself solely as noninflammatory lesions, i.e., comedones and intact cysts, or as inflammatory lesions, i.e., papules, nodules, and pustules. The process may resolve…

A Clinical Atlas of 101 Common Skin Diseases

Keratosis Pilaris/Lichen Spinulosus

Keratotic spikes that emerge from dilated ostia of infundibula and are equidistant from one another. The term keratosis pilaris refers to the phenomenon when it presents itself without any distinct arrangement of individual lesions, whereas the…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…are characterized clinically by dark casts of dilated infundibula dubbed by the laity “blackheads.” Figure 3.11 Comedo. Comedones may develop secondary to occlusion (such as by machine oils) and to severe longstanding damage by sunlight…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…= Keratosis pilaris (and its variant, lichen spinulosus) + No other findings on a face devoid of prominent solar elastosis = Comedo of acne vulgaris + On a face marked by extensive solar elastosis = Comedo of Favre-Racouchot disease + Infundibula…

Hypertrophic lichen planus versus prurigo nodularis: a dermoscopic perspective

Hypertrophic lichen planus versus prurigo nodularis: a dermoscopic perspective

…ws). [Copyright: ©2016 Ankad et al.] Figure 3. Dermoscopy of hypertrophic lichen planus shows gray-blue globules (hexagons), comedo-like openings (arrows), brownish-black dots (circles) and red globules (stars). [Copyright: ©2016 Ankad et al.]…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.1.1A: Pustular dermatitis, infundibular + 10.1.1B: A comedo in association with granulomatous and fibrosing peri-infundibulitis = Acne vulgaris Many of the findings pictured here may be seen in other types of suppurative infundibulitis,…

Differential Diagnosis in Dermatopathology

Discussions

…a comedo, dilated pore contains cornified cells arranged in basket-woven and laminate pattern, whereas cornified cells in a comedo are arranged compactly. Furthermore, comedones do not have rete ridges along the sides of the infundibular…