Cutaneous paraneoplastic syndrome associated with anal squamous cell carcinoma: a rare presentation of an uncommon cancer

Annular and acral/facial dyskeratotic paraneoplastic disorders

Annular and acral/facial dyskeratotic paraneoplastic disorders are inflammatory dermatoses that occur in association with distant cancers but are not precursors, extensions, or metastases of them. There are four classical entities under this rubric: two gyrate entities, erythema annulare centrifugum and erythema gyratum repens, and two acral/facial dyskeratotic entities, acrokeratosis paraneoplastic (Bazex syndrome) and tripe palms. Each of these entities may also occur in association with another etiopathogenesis and may present either as a classical entity or as a barely recognizable disease. We discuss these entities, their associated causes, and their differential diagnoses in turn.

Pharyngeal-Esophageal Malignancies with Dermatologic Paraneoplastic Syndrome

Systemic changes often send signals to the skin, and certain neoplastic diseases of the internal organs can also trigger skin manifestations. In this article, the authors make clinical photography presentations of the patients seen at our clinic with dermatologic paraneoplastic syndromes within pharyngeal–esophageal malignancies, describe several paraneoplastic dermatoses, and also review high-quality scientific literature in order to be able to highlight the dermatological signs of pharyngoesophageal malignant tumors. The majority of our patients with paraneoplastic dermatoses, filtering for pharyngoesophageal malignancies, had esophageal neoplasms, out of whom seven were female and two were male, making esophageal cancer more common within the paraneoplastic dermatoses within pharyngoesophageal malignancies. An early recognition of paraneoplastic dermatoses can diagnose neoplasms and sequentially contribute to a better prognosis for the patient. This matter is also useful for front-line medical personnel in order to improve early diagnosis of the underlying malignancy, curative interventions with prompt therapy administration and good prognosis.