Abstract
Primary malignant melanoma of the esophagus is defined as a tumor, the frequency of which is 0.1-0.2% of all malignant lesions of the esophagus. This type of neoplasia is difficult to diagnose and is characterized by rapid progression, high recurrence rate and metastasis. Despite the diagnostic capabilities of X-ray examination methods, which make it possible to identify a tumor and determine its localization, the correct diagnosis can only be established by endoscopic examination of the upper digestive tract with biopsy and subsequent pathological and immunohistochemical studies. A 78 year-old male patient was admitted to the Herzen Moscow State Medical Institute with suspected esophageal cancer. It is known from the anamnesis, that the patient for 6 months notes a dysphagia, pain in the chest area. Based on the data of our expert endoscopic examination, we suspected primary esophageal melanoma with a mixed growth - exophytic and flat-type. According to the results of pathological examination of the biopsies, pigment epithelial-cell melanoma of the esophagus with high mitotic index (up to 3 mitosis figures per 1 sq.mm) with infiltrative growth type. This clinical case demonstrates the importance of a detailed endoscopic examination and performing a targeted biopsy, followed by expert pathological examination in the differential diagnosis of esophageal diseases characterized by pigmentation of mucosa.
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