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Neoplasms affecting the integumentary system of birds in the genus Amazona. (a) Pericloacal lipoma (A. aestiva). (b) Lipoma affecting the dorsal area near the tail (Amazona sp.). (c) Cutaneous lymphoma (A. aestiva). (d) Well-differentiated hemangiosarcoma affecting the pelvic limb (A. aestiva).
