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Upon routine annual skin examination, dark brown, dome-shaped nodular lesion discovered on right lower back. No clinically palpable lymph nodes.
Chest X-ray: Negative.
Excision and removal of right, lower back lesion. Surgical margins of 0.5 cm.
Wide re-excision of right, lower back lesion. Sentinel lymph node biopsy of right groin, 1 node removed.
Tissue from initial excision of lesion: malignant nodular melanoma invading into reticular dermis. Clark's Level IV, Breslow's depth of 2.2 mm. No ulceration.
Upon re-excision no residual tumor was found. Sentinel lymph node biopsy of right femoral node was negative.
Surgery: Excision of right lower back lesion
Re-excision of right lower back lesion and sentinel lymph node biopsy.