Histologic Diagnosis of Inflammatory Skin Diseases

Majocchi’s granuloma

…n that culminates in an ulcerated mass of granulation tissue, suppuration, and granulomatous inflammation accompanied by dense infiltrates of lymphocytes and plasma cells, the entire process resolving with fibrosis. A diagnosis specific of kerion can…

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

…ve infundibulitis often are discovered. Even without signs of suppuration in an indubitable infundibulum, a diagnosis of suppurative infundibulitis may be inferred on the basis of changes distinctive found focally and, sometimes, in linear arrangemen…

Histologic Diagnosis of Inflammatory Skin Diseases

Infundibulitis secondary to agents topical

….” The inflammatory process usually expresses itself as suppuration in an infundibulum. What distinguishes some suppurative infundibulitides induced by agents topical from suppurative infundibulitides brought about by other types of factors non…

Histologic Diagnosis of Inflammatory Skin Diseases

Phaeohyphomycosis

…opathologic Plaques and nodules of deep lesions are formed of suppuration joined by granulomatous inflammation that, in time, is followed by fibrosis. Epidermal changes of scale-crust result from parakeratosis accompanied by plasma and neutrophils. D…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ous variant of chromomycosis. Fungi reside mostly in zones of suppuration 10.79.2A: Panniculitis, lobular + 10.79.2B: Brown fungi in zones of suppurative granulomatous inflammation = Phaeohyphomycosis ¬†This condition may involve the subcuta…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…usually is present at the base of the epithelial channel 6. Suppuration present within the infundibular channel and sometimes contiguous with it 6. Neutrophils variable in number in the channels, i.e., sparse to moderately dense, but rarely as supp…

Histologic Diagnosis of Inflammatory Skin Diseases

Nodular fasciitis

…s is accompanied by thrombosis of subcutaneous vessels and by suppuration. Laboratory confirmation None exists. Cause and mechanism Trauma is thought to be precipitating. Comment We include nodular fasciitis in this work about diagnosis by conventi…

Dermatology Practical & Conceptual

A verrucous plaque on the lower leg

…omatosis. Granulomas were noted in the dermis showing central suppuration and necrosis (Figure 2). A marked plasma cell infiltrate was also evident. Copper colored muriform bodies were revealed in some granulomas (Figure 3). Figure 1. Verrucous p…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pityrosporum Folliculitis and Demodectic Folliculitis?

…infundibula into the dermis where they call forth additional suppuration followed by granulomatous (foreign body type) and, sometimes, by fibrosing inflammation. The contents discharged into the dermis are corneocytes, sebaceous secretion, bacteria,…

Histologic Diagnosis of Inflammatory Skin Diseases

Crohn’s disease

…re related overtly to the infiltrates of neutrophils, as when suppuration in association with pseudocarcinomatous proliferation of infundibular keratocytes is surrounded by epithelioid histiocytes arrayed in a palisade. At other times, however, granu…