Fig. 2From: Severe constipation as the first clinical manifestation in multiple endocrine neoplasia type 2B: a case report and literature reviewPathological image of the thyroid tumor (a) Pathological image of the thyroid tumor (HE staining, 40 × 10), showing the arrangement of spindle-shaped medullary carcinoma cells and amyloid deposition; (b)(c)(d) are immunohistochemical photomicrographs (DAB staining, 40 × 10) that suggest calcitonin (+), Ki67 (+), and TTF-1 (+)Back to article page