Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Psychocutaneous Disorders?

“The influence of the psyche on the skin is greater than on any other organ. It is apparent in the many cutaneous expressions of the emotions, subjective, as well as objective, both in man and in animals. It is for this reason that the skin i…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vasculitis

See Fig. 5.218 A&B. Figure 5.218 Vasculitis. A. Small vessel. B. Large vessel. Before a reasoned and reasonable method for diagnosis histopathologic of vasculitis in skin and subcutaneous fat can be formulated, a definition of vasculitis must…

Histologic Diagnosis of Inflammatory Skin Diseases

Mycosis fungoides

Mycosis fungoides Synonyms Cutaneous T-cell lymphoma Presentation stereotypical Age and Sex Adults usually, although children may be affected. Males preponderant. Distribution of lesions Often widespread, but sometimes localized to a single patch or…

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

“Folliculitis” (Infundibulitis) Synonyms What is designated, universally, folliculitis is, in actuality, infundibulitis. In short, infundibulitis is NOT a synonym for folliculitis; the former, for purposes practical, is a suppurative pro…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Psoriasis on volar skin Dyshidrotic dermatitis 1. Rete ridges of approximately equal length and breadth 1. Rete ridges of unequal length and breadth 2. No pure spongiotic vesicles, i.e., ones devoid of neutrophils 2. Pure spongiotic vesicles o…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

“So we have to start once more [in regard to what is the authentic nature of lichen rubra moniliformia], returning to the old case of Kaposi by which the question began in 1886.” Pinkus H. Lichen ruber moniliformis Kaposi. Arch Dermato…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Perforating Diseases?

“Perforating dermatoses: . . . various cutaneous disorders are discussed in which the process of perforation and elimination of various tissue components plays a major role in the basic pathologic mechanism. These include perforating granulom…

Histologic Diagnosis of Inflammatory Skin Diseases

Grover’s disease

Grover’s disease Synonyms Transient acantholytic dermatosis Transitory acantholytic dermatosis Benign papular acantholytic dermatosis Persistent acantholytic dermatosis Presentation stereotypical Age and sex Middle-aged and elderly adults, h…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen sclerosus et atrophicus

Lichen sclerosus et atrophicus Synonyms Lichen sclerosis Lichen alba White spot disease Presentation stereotypical Age and sex Any age, but most common in middle-aged women Distribution of lesions Genitalia particularly, but also other sites such as…