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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Can transrectal ultrasonography distinguish anorectal malignant melanoma from low rectal adenocarcinoma? A retrospective paired study for ten years

Fig. 1

The ultrasonic image of an ARMM (Anorectal malignant melanoma). A 67-year-old female patient. A Rich blood flow signals at the marginal and inner part of the mass, the arterial pulse spectrum was detected, and PSV was 14.3 cm/s, RI was 0.82. B The presence of perirectal lymph node metastasis, and the maximum diameter of the node was 7 mm. C The mass was completely cleared at 1 min and 59 s after contrast-enhanced ultrasonography (CEUS). D Perirectal lymph node showed rapid enhancement and clearance in CEUS. Immunohistochemistry analysis and pathology after surgery: S100 (+), HMB45 (+), CD63 (+), PCK (−), EMA (−), PDL1 (−). TRUS found that the lesion infiltrated the submucosa, while pathology suggested that the tumor was confined to the mucosa

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BMC Gastroenterology

ISSN: 1471-230X

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