Histologic Diagnosis of Inflammatory Skin Diseases

Blood Vessels

…eccrine units) and nonepithelial structures of adnexa (smooth muscles, nerves, and medium-sized and larger blood vessels). Figure 1.72 The dermal vasculature consists of a network of two plexuses that parallel the skin surface. The superficial ple…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Origin of Adnexal Neoplasms?

…om follicles, sebaceous units, apocrine units, eccrine units, muscles, nerves, or vessels (blood or lymphatic); only the direction of differentiation can be inferred. On the basis of study of findings histopathologic, the origin of adnexal neoplasms,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermal Papilla?

…ompanied by a follicular papilla; they are attached to smooth muscles. In summary, studies histologic of normal human follicles led us to conclude that the bulge is a structure very different from that which has been pictured and described. It is not…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

…crine units on the other; the nonepithelial adnexa are smooth muscles, nerves, and blood vessels. Each of those normal adnexal structures has its own distinctive histologic attributes that serve as the basis for formulation of criteria for identifica…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eruptive Vellus Hair Cyst?

…epithelial component appears in the hamartoma, namely, smooth muscles of hair erection. What has been named “eruptive vellus hair cyst” has all of the constituents of classic steatocystoma except that the lining of the cyst, instead of re…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Follicular Degeneration Syndrome?

…ement of them by “dense collagen”, and sparing of muscles of hair erection. On the basis of what has been written by LoPresti et al. and by Sperling, however, some differences clinical and histopathologic seem to exist between hot comb al…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Psychocutaneous Disorders?

…les” as a consequence of the involuntary pull of smooth muscles on hair follicles in response to powerful emotions? Skin contains nerves that are integral to the peripheral nervous system. As long as mortals think and feel, the effects of those…