Acute purpura fulminans-a rare cause of skin necrosis: A single-institution clinicopathological experience

Cutaneous eccrine inflammation and necrosis: review of inflammatory disorders affecting the eccrine apparatus including new associations

Despite being frequently overlooked during the examination of histopathological sections, eccrine sweat glands can offer clues for diagnosing various skin conditions. They provide important functions and can lead to several diseases when inflamed or injured. This review article provides information regarding eccrine physiology as well as well-established and novel entities that occur in association with eccrine gland pathology.

Purpura Fulminans Following Toxic Epidermal Necrolysis-Like Presentation of Spontaneous Linear IgA Bullous Disease

Purpura fulminans (PF) is a life-threatening disease of cutaneous microvascular thrombosis and hemorrhagic necrosis. Linear IgA bullous disease (LABD) is an autoimmune disease of subepidermal blistering. We present the first known case of PF following a toxic epidermal necrolysis-like presentation of spontaneous LABD in a 70-year-old female.

Purpura Fulminans in the Setting of Klebsiella Pneumoniae Bacteremia and Acetaminophen Overdose

Purpura fulminans (PF) is a rare, life-threatening disorder characterized by disseminated intravascular coagulation (DIC), circulatory collapse, and hemorrhagic cutaneous purpura. It typically occurs secondary to acute infections, usually meningococcal septicemia, although there are also congenital and acquired causes. We report a case of a 56-year old female who presented to our institution with clinical signs of PF in the setting of acetaminophen overdose and Klebsiella pneumoniae sepsis. Given the rarity of the disease, we also review cases of PF in similar clinical scenarios that have been described in the literature.

Cutaneous lymphohistiocytic infiltrates with foamy macrophages: A novel histopathological clue to Stenotrophomonas maltophilia septicemia

The best-known cutaneous manifestations of septicemia in the skin are the so-called "septic vasculitis" and "septic vasculopathy," which represent two sides of the same pathogenetic process. The spectrum of cutaneous presentations of septicemia is, however, more complex, extending beyond septic vasculitis/vasculopathy. We describe the exceptional histopathological findings of skin lesions associated with Stenotrophomonas maltophilia septicemia, featuring a lymphohistiocytic infiltrate characterized by predominance of foamy macrophages containing granular basophilic material negative for PAS, Gram, Fite, and Grocott. Albeit an uncommon occurrence, S. maltophilia septicemia should be included in the broad differential diagnosis of cutaneous lesions occurring in immunocompromised individuals with worsening general conditions. Awareness of these histopathological findings may facilitate the identification of this insidious infectious agent as a source of nosocomial septicemia.

Clinical and Histopathologic Characteristics of the Main Causes of Vascular Occlusion - Part I: Thrombi

La patología vascular oclusiva es causante de diversas y variadas manifestaciones clínicas, algunas de las cuales son de catastróficas consecuencias para el paciente. Sin embargo, las causas de tal oclusión son muy variadas, extendiéndose desde trombos por acción descontrolada de los mecanismos de coagulación, hasta anomalías de los endotelios de los vasos u oclusión por materiales extrínsecos. En una serie de dos artículos hacemos una revisión de las principales causas de oclusión vascular, resumiendo sus manifestaciones clínicas principales y los hallazgos histopatológicos fundamentales. Esta primera parte corresponde a las oclusiones vasculares que cursan con trombos.