Postoperative Spindle Cell Nodule of the Bladder

**Semantic type:** Disease or Syndrome

**Definition:** A benign, reactive lesion of the bladder, occurring status post bladder instrumentation; histologic exam demonstrates a fascicular growth pattern of plump or elongated spindle cells infiltrating the bladder wall without atypia or necrosis.

**Synonyms:** - Postoperative Spindle Cell Nodule of Bladder - Postoperative Spindle Cell Nodule of Urinary Bladder - Postoperative Spindle Cell Nodule of the Urinary Bladder - Posttraumatic Spindle Cell Nodule of Bladder - Posttraumatic Spindle Cell Nodule of Urinary Bladder - Posttraumatic Spindle Cell Nodule of the Bladder - Posttraumatic Spindle Cell Nodule of the Urinary Bladder