Biopsy - Medium Specimen

A Biopsy (Medium Specimen) refers to the pathological examination of a moderate amount of tissue removed from the body to diagnose disease, most commonly to rule out or confirm malignancy. Unlike small punch biopsies or simple needle aspirates, a medium specimen typically involves an entire small organ, a distinct tissue wedge, or a significant portion of an excised lesion—such as a gallbladder, an appendix, a small lipoma, or a localized skin excision. Once received by the laboratory, the tissue undergoes gross inspection, is chemically fixed, sectioned into ultra-thin slices, and stained. A pathologist then examines these structures under a microscope to evaluate cellular architecture, identify abnormal growth patterns, and provide a definitive diagnostic report to guide further medical or surgical treatment.