Grossing is the initial examination and selection of tissue samples after they have been removed from the body. The pathologist or a trained technician visually inspects the tissue to identify abnormalities, measure dimensions, and select representative areas for further processing. This step is critical for ensuring that the most diagnostically important parts of the specimen are included in the final microscopic slides. The process involves describing the tissue's appearance, noting any lesions, and dictating or writing a detailed description.