Life-threatening paraneoplastic cutaneous syndromes
Introduction
Paraneoplastic syndromes may be defined as diseases or symptom complexes that are associated with the presence of a malignancy. In dermatology we may modify this definition to refer to dermatoses that are associated with internal malignancy.1 We have recently been reminded that, Helen O. Curth proposed the criteria to be satisfied to postulate an association between the malignancy and the cutaneous condition. These include:
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concurrent onset and parallel course;
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a characteristic type of associated malignancy;
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a statistical association of the dermatosis and the malignancy;
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a genetic link between the dermatosis and the malignancy.
Section snippets
Acanthosis nigricans
Arguably, the earliest recognized paraneoplastic syndrome is acanthosis nigricans (AN). Although this condition may be familial or can occur in association with obesity or endocrinopathy, and most recently has been regarded as a sign of insulin resistance,2 extensive and severe AN is often associated with malignancy, particularly adenocarcinomas. Acanthosis nigricans is characterized by the presence of pigmented, velvety plaques most often seen on the sides and nape of the neck and other
Acrokeratosis paraneoplastica of Bazex
Bazex was first to establish an association between this uniquely distributed papulosquamous eruption and underlying malignancy.a
Dermatomyositis
The characteristic heliotrope periorbital erythema and the poikilodermatous eruption characteristically occurring on extensor surfaces may occasionally be difficult to distinguish from cutaneous lupus. Dermatomyositis is described as presenting a violaceous erythema while lupus is generally more of a red color. Although the link between dermatomyositis and malignancy is controversial, reports of associations continue to appear in the literature. Interestingly, although childhood dermatomyositis
Erythema gyratum repens
Dermatologists are aware of several gyrate (gyrate from the Greek meaning a circle) erythemas, but one is virtually always indicative of internal malignancy. Erythema gyratum repens (repens from the Latin meaning to creep) was first reported in the literature and named by Gammel24 in 1952. Since then, a number of patients have been reported and there appears to be a 2:1 ratio of men to women and the average age on onset is 63 years.25 All reported patients with erythema gyratum repens have been
Necrolytic migratory erythema
This condition is almost unique among the paraneoplastic syndromes in that it is specific for a given tumor,40 although there are reports of the rash occurring with other pancreatic diseases, malabsorption, and without any associated malignancy. It is typically associated with islet cell neoplasms, usually glucagonomas. The glucagonoma syndrome typically includes diabetes or glucose intolerance, and hyperglucagonemia, in addition to the rash. Other common manifestations include weight loss,
Paraneoplastic pemphigus
Among the most recently described paraneoplastic syndromes is paraneoplastic pemphigus (PNP). Historically, pemphigus vulgaris and pemphigus foliaceus have been reported in association with malignancy, but this association has been inconsistent (Table 1). Pemphigus has been associated with a variety of lymphoproliferative disorders, but this may be a function of the immunosuppressive drugs used to treat the blistering disease. Similarly, bullous pemphigoid was felt to be associated with
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