Esophageal cancer is the sixth most common cause of cancer-related deaths worldwide. Patients with esophageal cancer usually present with locally advanced disease with presence of metastases at diagnosis (1). Squamous-cell carcinoma is the most common histologic subtype in the proximal and middle thirds of the esophagus. Skin metastases from visceral tumors are rare, with a prevalence of up to 2 % (2). An association between esophageal cancer and skin metastases, as in the present case, has only been exceptionally described (3).
CASE REPORTA 71-year-old male had a physical exam which revealed an ulcerated, hard tumor outgrowth, approximately 3 cm in size, on his right flank (Fig. 1A), in association with a similar 2.5 cm lesion in the left subclavicular area (Fig. 1B). He had dysphagia to both solids and liquids a few weeks after the development of said lesions, as well as 20 kg weight loss. The endoscopic study revealed a protruding, ulcerated neoplasm at 22 cm from the dental arch, which almost completely occludes the esophageal lumen (Fig. 1C) -histology found it to be an infiltrating squamous-cell carcinoma. A pathological examination of skin lesions revealed cutaneous metastatic infiltration by a squamous-cell carcinoma, with positive immunohistochemical staining for high molecular weight cytokeratine and vimentin (Fig. 2). Additional lab tests found the presence of metastatic bone disease involving the left ribs, D9 vertebral body, and right iliac bone. Treatment with a prosthesis and chemotherapy was ultimately selected.
DISCUSSIONSkin manifestations from esophageal cancer are rare, less than 1 %, and were primarily described for adenocarcinoma (1). The presence of skin metastases from an esophageal squamouscell carcinoma is extremely rare, and its review in the literature is limited by its uncommon nature. A study by Lookingbill et al., in 7,316 patients with skin cancer and metastases, found no individuals with a primary esophageal PICTURES IN DIGESTIVE PATHOLOGY