Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine, Apocrine, and Apoeccrine Sweat Glands?

…um.” Sato K. Biology of the eccrine glands and apocrine sweat glands. In: Fitzpatrick TB, Eisen AZ, Wolff K, et al., eds. Dermatology in general medicine. 4th ed. New York, NY: McGraw-Hill International Book Co., 1993:238. “In nevus seb…

Histologic Diagnosis of Inflammatory Skin Diseases

Seborrheic dermatitis

Seborrheic dermatitis Synonyms Seborrhoeic dermatitis Seborrheic eczema Unna disease Presentation stereotypical Age and sex Young adults especially and males in particular Distribution of lesions Face, scalp, retroauricular area, and V region of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

…e d”erythrodermie oedemateuse et pigmnetée. Ann Dermatol Syphiligr (Paris) 1949;9:5-22. Unna PG, Santi, Pollitzer S. über die Parakeratosen im allgemeinen und eine neue Form derselben (Parakeratosis variegata). Monatsschrift Praktische Dermatol…

Histologic Diagnosis of Inflammatory Skin Diseases

Selection of the Method for Surgery

…t it is a highly circumscribed one confined to what clinically seem to be benign, mostly exophytic growths such as warts, skin tags, seborrheic keratoses, and the melanocytic nevi of Unna and Miescher types. Those banal lesions may be removed in cosm…

Histologic Diagnosis of Inflammatory Skin Diseases

Keratosis pilaris/Lichen spinulosus

…by the clinical lectures of Dr Biett, physician to the Hopital St Louis, Paris. Translated from the French with notes. Philadelphia: Carey, Lea & Carey, 1829. Radcliffe-Crocker H. Diseases of the Skin. London: 1888:228, 298. Unna PG. Infectious i…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Benign, Pseudo, or Malignant Acanthosis Nigricans?

…. James WD, Berger, T,Elston D. Andrews’ Diseases of the Skin: Clinical Dermatology. 10th ed. Philadelphia: W.B. Saunders Company, 2006:506. “The term acanthosis nigricans was originally proposed by Unna, although the first cases were de…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous Horn?

“Cutaneous horns may complicate solar keratoses, viral warts, seborrheic warts, squamous cell carcinomas, lichenoid keratoses, and basal cell carcinomas.” McKee PH. Tumors of the surface epithelium. In: Pathology of the Skin with Clinic…

Histologic Diagnosis of Inflammatory Skin Diseases

Fixation of the Specimen

…utaraldehyde rather than in formalin. That fixative prepares a specimen for analysis by both light and electron microscopy. In sum and in short, if a biopsy specimen is not taken properly and sections from it are not prepared well, even an Unna is un…