Dr. Charlie Herndon distinguishes LEGH
- Dr. Charlie Herndon, a pathology trainee who posts as @DrCycloPath, shared an image-heavy teaching thread on April 26 explaining how lobular endocervical glandular hyperplasia can mimic cervical glandular cancer on cytology. - The core distinction is that LEGH is a rare benign, gastric-type glandular lesion of the upper endocervix, while its closest malignant lookalikes include gastric-type adenocarcinoma and minimal-deviation adenocarcinoma. - The topic matters because atypical LEGH is now treated within the gastric-type neoplasia spectrum, and worsening cytology or lesion growth can signal malignant change. (pubmed.ncbi.nlm.nih.gov)
Lobular endocervical glandular hyperplasia, or LEGH, is a rare cervical gland lesion that can look deceptively similar to cancer under the microscope. (pathologyoutlines.com) The lesion arises in the upper endocervical canal and is defined by small round glands arranged in discrete lobules with gastric-type mucin, meaning the cells make mucus more like stomach lining than typical cervical glands. (pathologyoutlines.com) (pmc.ncbi.nlm.nih.gov) That matters in cytology because the main diagnostic danger is not an ordinary human papillomavirus-related cervical lesion, but an HPV-independent gastric-type malignancy that can resemble LEGH. (pathologyoutlines.com 1) (pathologyoutlines.com 2) Herndon’s April 26 teaching post focused on that bench-level problem: how to separate a benign mimic from invasive endocervical disease when the smear is mucin-rich and the glandular cells look unusual. (threadreaderapp.com) (pathologyoutlines.com) In the literature, pure LEGH tends to show bland glandular cells with gastric-type mucin, while atypical LEGH and LEGH-associated adenocarcinoma show progressively stronger atypia and more concerning architecture. (karger.com) (sciencedirect.com) Pathologists also watch the clinical setting. LEGH has been reported most often in perimenopausal women and can present with profuse watery vaginal discharge or a multicystic cervical lesion on imaging. (pathologyoutlines.com) (pmc.ncbi.nlm.nih.gov) (journals.sagepub.com) The reason specialists care so much about overcalling versus undercalling is that LEGH sits next to a more dangerous disease family. Atypical LEGH is now classified as gastric-type adenocarcinoma in situ, and LEGH has been found adjacent to a substantial share of gastric-type adenocarcinomas. (pathologyoutlines.com 1) (pathologyoutlines.com 2) Follow-up strategy reflects that uncertainty. A 2022 review said worsening cytology and an increase in lesion size were important warning signs of malignant change in patients managed conservatively. (pubmed.ncbi.nlm.nih.gov) (obgyn.onlinelibrary.wiley.com) So the value of a case-based image thread here is practical, not promotional: it trains readers to recognize when a mucinous cervical glandular lesion is likely bland LEGH and when the pattern should trigger concern for gastric-type neoplasia. (sciencedirect.com) (pathologyoutlines.com)
