[Inflammatory esophageal polyp with bizarre stromal cells: possible diagnostic pitfall]

Area of Science:

• Gastroenterology and Pathology

Background:

• Accurate diagnosis of tumor-like lesions in the gastrointestinal tract is challenging.
• Reflux disease can cause regenerative hyperplasia of esophageal squamous epithelium, mimicking malignancy.
• Bizarre stromal cells present a diagnostic pitfall in esophageal pathology.

Observation:

• A 46-year-old patient with reflux disease symptoms was diagnosed with a benign inflammatory polyp in the distal esophagus.
• Histology revealed stromal cells with nuclear hyperchromatism and enlargement within the polyp.
• These atypical cells were vimentin-positive with a low Ki67/MIB-1 proliferation rate and no observed mitoses.

Findings:

• The study details the morphology and etiology of bizarre stromal cells in an esophageal polyp.
• Key diagnostic features for differentiating these cells from malignancy are discussed.
• Vimentin positivity and low proliferation rate support a benign inflammatory process.

Implications:

• Understanding bizarre stromal cells is crucial for accurate diagnosis of esophageal lesions.
• This case emphasizes the importance of careful histological evaluation in reflux patients.
• Distinguishing benign reactive changes from malignancy prevents misdiagnosis and unnecessary treatment.