Menetrier Disease

Slide 1 · Ménétrier Disease

Hypertrophic gastropathy • morphology, mechanisms, and clinical consequences

Dr Abu Suraih Sakhri

MBBS, MD (Pathology)

www.abusuraihsakhri.com

Slide 2 · Learning objectives

Recognize the distinctive gross and microscopic features of Ménétrier disease.

Connect TGF-α/EGFR signaling to foveolar hyperplasia and gastric protein loss.

Differentiate this disorder from other gastric fold enlargements and apply the clinicopathologic pattern.

Slide 3 · The stomach has region-specific mucosa

Fundus and body contain well-developed oxyntic glands.

The antrum and cardia emphasize mucin-secreting epithelium and smaller glands.

Disease location helps identify the dominant cellular response.

Fundus

Oxyntic glands

Body

Oxyntic glands

Antrum

Mucin-secreting / endocrine

Slide 4 · Normal oxyntic mucosa: A functional baseline

Surface and foveolar mucous epithelium lines the lumen and pits.

The deeper body/fundus glands contain acid-secreting parietal cells and enzyme-secreting chief cells.

Both compartments must be considered when reading hypertrophic mucosa.

Normal mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 5 · Gastropathy differs from gastritis

Gastropathy emphasizes epithelial or mucosal injury/change without prominent inflammatory infiltration.

Gastritis refers to an inflammatory process in the gastric mucosa.

A markedly thickened fold is not necessarily an inflammatory lesion.

Slide 6 · What is a hypertrophic gastropathy?

Uncommon gastric disorders can cause giant, cerebriform rugal folds.

In the Robbins parent section, epithelial hyperplasia is the fundamental basis of fold enlargement.

Excess growth-factor signaling provides a mechanistic link.

Excess growth signal

Epithelial hyperplasia

Enlarged gastric rugae

Schematic • mechanistic teaching diagram

Slide 7 · Two archetypal hypertrophic gastropathies

Ménétrier disease: Predominantly mucous/foveolar epithelial hyperplasia.

Zollinger–Ellison syndrome: Predominantly parietal-cell hyperplasia with acid-driven ulceration.

The same gross descriptor—large folds—can reflect different cellular processes.

Ménétrier disease

Foveolar mucous cells

Protein loss

Zollinger–Ellison

Parietal cells

Peptic ulcers

Schematic • contrasting patterns

Slide 8 · Core definition of Ménétrier disease

Rare hypertrophic gastropathy with diffuse foveolar hyperplasia.

Typically centered in the gastric body and fundus.

A protein-losing gastric mucosa produces clinically significant hypoproteinemia.

Slide 9 · The defining clinicopathologic pattern

The anatomic, epithelial, and biochemical abnormalities belong to one process.

Neither enlarged folds alone nor hypoalbuminemia alone identifies the disease.

Integrate morphology with protein loss and exclusion of mimics.

Body/fundus fold enlargement

Foveolar hyperplasia

Gastric protein loss

Schematic • mechanistic teaching diagram

Slide 10 · Body and fundus are the principal sites

Irregularly enlarged rugae localize mainly to the body and fundus.

The antrum is generally spared rather than obligatorily normal in every patient.

Distribution directs endoscopic assessment and histologic sampling.

Fundus

Enlarged rugae

Body

Enlarged rugae

Antrum

Generally spared

Slide 11 · What makes the disease clinically consequential?

Protein can be lost directly across the abnormal gastric mucosa.

Albumin depletion manifests as low circulating protein and peripheral edema.

Adults have an increased association with gastric adenocarcinoma.

Slide 12 · TGF-α is the proximal growth-factor signal

The disorder to excessive transforming growth factor-α secretion.

TGF-α acts as a ligand for the epidermal growth factor receptor.

This ligand–receptor relationship is central to the pathogenesis.

Increased TGF-α

EGFR binding

Receptor activation

Schematic • mechanistic teaching diagram

Slide 13 · EGFR hyperactivation expands foveolar epithelium

Hyperactivation of EGFR occurs on gastric epithelial cells.

Proliferation becomes disproportionately directed toward the foveolar mucous compartment.

The resulting mucosal expansion remodels the gland architecture.

EGFR hyperactivation

Foveolar proliferation

Expanded mucous epithelium

Schematic • mechanistic teaching diagram

Slide 14 · Molecular signaling becomes gross morphology

The molecular signal is reflected in increased epithelial mass.

Expanded mucous-cell epithelium produces thickened and irregular mucosal folds.

This links a cell-level event to the endoscopic finding of enlarged rugae.

TGF-α → EGFR

Foveolar hyperplasia

Giant rugal folds

Schematic • mechanistic teaching diagram

Slide 15 · Foveolar expansion alters the gland balance

Hyperplasia affects the surface/pit mucous-cell lineage.

Atrophic or hypoplastic oxyntic glands can coexist with surface expansion.

Fold size therefore does not imply an increase in all secretory cell types.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 16 · Hyperplasia and atrophy can coexist

A hypertrophic surface compartment can mask the loss of deeper functional glands.

In Ménétrier disease, foveolar epithelial expansion contrasts with reduced chief/parietal cells.

Report both changes rather than equating thicker mucosa with more oxyntic tissue.

Surface/pit compartment

Foveolar hyperplasia

Expansion

Oxyntic compartment

Chief/parietal hypoplasia

Reduction

Schematic • contrasting patterns

Slide 17 · The protein-losing phenotype

Robbins documents albumin loss across the gastric mucosa.

This gastric leak can be large enough to produce systemic hypoproteinemia.

Clinical edema is a systemic consequence of a mucosal lesion.

Abnormal gastric mucosa

Albumin loss into lumen

Hypoproteinemia

Schematic • mechanistic teaching diagram

Slide 18 · Why does peripheral edema occur?

Albumin depletion lowers the plasma colloid osmotic contribution to intravascular fluid retention.

Fluid movement toward interstitial tissues contributes to peripheral swelling.

This is a pathophysiologic interpretation of the protein-loss finding.

Albumin loss

Reduced oncotic pressure

Peripheral edema

Schematic • mechanistic teaching diagram

Slide 19 · Magnitude of protein loss: Interpret correctly

Albumin loss may approach 10 g/day.

This is a reported potential magnitude, not a diagnostic threshold or typical value for every patient.

The key diagnostic concept is enteric protein loss from the stomach.

Slide 20 · Infection associations require nuance

Some cases are associated with viral infection or Helicobacter pylori.

The adult disorder is linked to growth-factor signaling; A single infectious cause is not established for all adults.

Pediatric disease frequently follows CMV or other infections.

Adult presentations

No universal infectious trigger

May be persistent

Pediatric presentations

Often postinfectious

Often self-limited

Schematic • contrasting patterns

Slide 21 · Proposed pediatric CMV–EGFR link

The text suggests that CMV-induced EGFR activation can help drive pediatric disease.

This is presented as a potential mechanism, not as a universally demonstrated pathway.

Viral clearance can coincide with reversal of mucosal proliferation.

CMV or other infection

Possible EGFR stimulation

Foveolar hyperplasia

Schematic • mechanistic teaching diagram

Slide 22 · Regression links mechanism to reversibility

The pediatric form often resolves when the associated viral illness clears.

Epithelial proliferation may normalize.

Gastric anatomy can be restored without the same chronic course expected in many adults.

Viral clearance

Epithelial normalization

Restored gastric anatomy

Schematic • mechanistic teaching diagram

Slide 23 · Systemic TGF-α effects extend beyond the stomach

The source describes possible hyperplasia of the liver, pancreas, and other GI segments.

Muscle and adipose tissue loss may accompany systemic involvement.

Psoriasis can also be seen as an associated manifestation.

Slide 24 · Hypoproteinemia is the biochemical anchor

Diffuse gastric mucosal albumin loss can lower circulating protein concentrations.

Biochemical findings should be interpreted with the gastric morphology.

The systemic consequences may overshadow the primary mucosal abnormality.

Slide 25 · Weight loss has multiple pathologic connections

Weight loss is a common clinical manifestation in the source.

Diarrhea and systemic muscle/adipose loss may coexist.

Avoid attributing weight loss to malignancy without diagnostic evidence.

Disease activity

Diarrhea / tissue loss

Weight loss

Schematic • mechanistic teaching diagram

Slide 26 · Diarrhea belongs to the clinical spectrum

Diarrhea as a frequent secondary symptom.

The clinical picture combines enteric symptoms with an altered gastric mucosa.

Diarrhea does not by itself differentiate Ménétrier disease from Zollinger–Ellison syndrome.

Slide 27 · Edema connects symptoms to a mechanism

Peripheral edema is common in the source description.

Albumin loss from the stomach provides the causal bridge between mucosal pathology and swelling.

The physical finding can be clinically more conspicuous than the gastric lesion.

Slide 28 · Localized lesion; Systemic presentation

The dominant morphologic lesion involves gastric body/fundus mucosa.

Its systemic expressions include hypoproteinemia, edema, diarrhea, and weight loss.

The disease illustrates how mucosal epithelium can produce generalized physiologic effects.

Local stomach change

Enlarged folds

Foveolar hyperplasia

Systemic effects

Low proteins / edema

Weight loss / diarrhea

Schematic • contrasting patterns

Slide 29 · Adult presentations merit neoplastic awareness

Adult Ménétrier disease is associated with increased gastric adenocarcinoma risk.

An association is not proof that every lesion is dysplastic or will progress.

Suspicious focal abnormalities need separate pathologic consideration.

Slide 30 · The pediatric course is often distinct

Childhood disease is commonly associated with CMV or other preceding infections.

It is often self-limited, unlike many adult cases.

The possibility of spontaneous mucosal recovery changes the clinical context.

Slide 31 · Adult and pediatric phenotype at a glance

Both presentations share the foveolar hyperplasia / protein-losing core.

Adults are particularly relevant to adenocarcinoma risk discussions.

Children more often display a reversible, infection-linked course.

Adult disease

Malignancy association

Persistence can occur

Pediatric disease

CMV/postinfectious association

Often reversible

Schematic • contrasting patterns

Slide 32 · Gross morphology: Distribution matters

The rugal folds become irregularly enlarged.

The body/fundus predominance is characteristic; Antral sparing is common.

Anatomic distribution helps separate a diffuse fold disorder from a focal polyp.

Fundus

Enlarged rugae

Body

Enlarged rugae

Antrum

Generally spared

Slide 33 · Giant folds are a mucosal proliferation pattern

Hypertrophic rugae may look cerebriform or convoluted.

Their enlargement reflects epithelial hyperplasia rather than a specific neoplasm.

Gross pattern recognition should prompt cellular characterization.

Giant cerebriform rugae (schematic)

Fold enlargement ≠ proof of malignancy

Conceptual fold profile • not specimen imagery

Slide 34 · The enlarged folds can appear polypoid

Some mucosal regions project in a polypoid fashion.

Polypoid appearance alone is not equivalent to a discrete neoplastic polyp.

The diffuse rugal pattern remains a key clue.

Giant cerebriform rugae (schematic)

Fold enlargement ≠ proof of malignancy

Conceptual fold profile • not specimen imagery

Slide 35 · Histologic hallmark: Foveolar mucous hyperplasia

The most characteristic microscopic change is expansion of foveolar mucous cells.

The surface/pit epithelium becomes conspicuously elongated and convoluted.

This defines the predominant epithelial cell type.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 36 · Corkscrew-like gland elongation

Glands become long and tortuous, creating a corkscrew-like profile.

Convolution is a morphologic expression of increased mucous epithelial mass.

Look for the pattern in the context of fold enlargement.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 37 · Cystic dilation is common

Dilated glandular lumina accompany the elongated mucous epithelium.

Cystic dilatation should not be interpreted in isolation.

The combination with foveolar hyperplasia is more discriminating.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 38 · Reduced parietal-cell compartment

The source describes diffuse or patchy glandular atrophy.

Parietal-cell hypoplasia may be intermixed with the hyperplastic epithelium.

Mucosal enlargement does not imply intact acid-producing glands.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 39 · Reduced chief-cell compartment

Chief cells may also be hypoplastic in affected mucosa.

Their decline marks loss of the differentiated oxyntic gland component.

Interpret this alongside foveolar expansion, not as a separate disease.

Ménétrier-pattern mucosa (schematic)

Foveolar compartment

Oxyntic cells

Blue: Mucous pits • Green/purple: Deeper gland cells

Slide 40 · The signature microscopic combination

Foveolar cell hyperplasia, corkscrew-like glands and cystic dilation favor the pattern.

Patchy or diffuse parietal/chief-cell hypoplasia adds specificity.

A cell-compartment assessment is more informative than mucosal thickness alone.

Expanded

Foveolar mucous cells

Elongated / dilated pits

Reduced

Parietal and chief cells

Oxyntic gland atrophy

Schematic • contrasting patterns

Slide 41 · Inflammation is usually modest

Ménétrier disease is classified with hypertrophic gastropathies.

Inflammatory infiltrates are usually limited.

Prominent inflammatory activity may raise the importance of alternative or associated lesions.

Slide 42 · Intraepithelial lymphocytes may be conspicuous

Some cases show marked intraepithelial lymphocytosis.

This exception does not replace the characteristic foveolar hyperplasia.

Assess inflammation as one feature within the overall architecture.

Slide 43 · A histologic reading sequence

First: Identify disproportionate foveolar epithelial expansion.

Second: Assess pit/gland elongation and cystic dilation.

Third: Evaluate the parietal/chief compartment and inflammatory infiltrate.

1. Foveolar expansion

2. Gland remodeling

3. Oxyntic cell depletion

Schematic • assessment sequence

Slide 44 · Ménétrier versus Zollinger–Ellison

Ménétrier disease primarily expands mucous/foveolar cells and produces hypoproteinemia.

Zollinger–Ellison syndrome expands parietal cells in oxyntic mucosa and causes peptic ulceration.

Both may produce enlarged folds, but cellular identity and symptoms distinguish them.

Ménétrier

Foveolar cells

Protein loss

Zollinger–Ellison

Parietal cells

Peptic ulceration

Schematic • contrasting patterns

Slide 45 · Hypertrophic gastropathy: Mechanism comparison

Characteristic

Ménétrier disease

Zollinger–Ellison syndrome

Dominant signal

TGF-α → EGFR

Gastrin (gastrinoma)

Cellular pattern

Foveolar mucous hyperplasia

Parietal-cell hyperplasia

Clinical signature

Hypoproteinemia; Edema

Peptic ulcers; Diarrhea

Cancer association in table

Yes (adult Ménétrier)

No (ZES)

Slide 46 · Ménétrier versus hyperplastic polyps

Ménétrier disease favors enlarged body/fundus rugae with diffuse foveolar change.

Inflammatory/hyperplastic polyps may occur in antrum or body and are linked to chronic gastritis.

Neutrophils and lymphocytes are more prominent in the polyp category in the Robbins comparison.

Ménétrier

Diffuse folds

Limited inflammation

Hyperplastic polyps

Polyp formation

Chronic gastritis setting

Schematic • contrasting patterns

Slide 47 · Ménétrier versus fundic gland polyps

Both can involve the body and fundus.

Fundic gland polyps feature parietal/chief-cell-associated gland changes, rather than dominant foveolar hyperplasia.

The source links fundic gland polyps with PPIs and familial adenomatous polyposis.

Ménétrier

Foveolar proliferation

Protein loss

Fundic gland polyps

Oxyntic elements

PPI / FAP context

Schematic • contrasting patterns

Slide 48 · Ménétrier versus gastritis cystica

Gastritis cystica features epithelial-lined cysts displaced into the gastric wall.

The source places gastritis cystica in a trauma/prior-surgery context.

Cystic change alone cannot establish Ménétrier disease.

Ménétrier

Foveolar expansion

Body/fundus folds

Gastritis cystica

Epithelial entrapment

Prior injury/surgery

Schematic • contrasting patterns

Slide 49 · Ménétrier versus gastric adenoma

Ménétrier disease is a hyperplastic mucous-cell process.

Gastric adenomas are dysplastic epithelial lesions, frequently associated with atrophy or intestinal metaplasia.

A mass-forming or cytologically abnormal area requires evaluation beyond the hypertrophic fold label.

Ménétrier

Foveolar hyperplasia

Diffuse rugal process

Gastric adenoma

Dysplastic epithelium

Focal neoplastic lesion

Schematic • contrasting patterns

Slide 50 · Location and predominant cell type

Lesion

Usual location

Dominant cells

Ménétrier disease

Body and fundus

Mucous / foveolar

Zollinger–Ellison

Fundus

Parietal, mucous, endocrine

Hyperplastic polyps

Antrum and body

Mucous

Fundic gland polyps

Body and fundus

Parietal and chief

Gastric adenoma

Antrum and body

Dysplastic intestinal-type

Slide 51 · Clinicopathologic evaluation of enlarged folds

Establish whether fold enlargement is diffuse and where it is concentrated.

Correlate foveolar versus parietal-cell prominence with clinical protein loss or ulceration.

Consider other proliferative lesions when morphology or clinical context does not fit.

1. Topography

2. Cellular pattern

3. Clinical correlation

Schematic • assessment sequence

Slide 52 · Sampling logic: Avoid a single-feature diagnosis

The disease is defined by a combined anatomic, microscopic, and clinical pattern.

Patchy atrophy means that one field may not reveal every feature.

This is a reasoned teaching approach, not a Robbins-specified biopsy protocol.

Slide 53 · Supportive care targets the consequences

The source includes intravenous albumin and parenteral nutritional support.

These approaches address protein depletion and nutritional compromise.

They do not, by themselves, identify or reverse the upstream growth-factor signal.

Gastric protein loss

Protein / nutrition deficits

Supportive replacement

Schematic • mechanistic teaching diagram

Slide 54 · Treat associated infections when relevant

For herpesvirus, CMV, or H. Pylori associations, treatment of the infection may help.

This is not an assertion that infection is the cause of every case.

Etiologic context matters especially in postinfectious pediatric disease.

Identify association

Treat infection if present

Assess disease response

Schematic • mechanistic teaching diagram

Slide 55 · EGFR blockade addresses disease signaling

The source reports that antibodies blocking EGFR activation can be effective.

The therapeutic target aligns with the TGF-α → EGFR pathogenic mechanism.

No dose, regimen, response rate, or guideline recommendation is specified by the supplied text.

Excess TGF-α / EGFR

EGFR-directed antibody

Reduce signaling

Schematic • mechanistic teaching diagram

Slide 56 · Gastrectomy remains an option in severe disease

Severe cases may require gastrectomy.

The rationale is to remove a mucosal source of ongoing pathology when less invasive measures are insufficient.

Surgical candidacy and detailed indications are beyond the supplied textbook excerpt.

Severe disease

Persistent burden

Consider gastrectomy

Schematic • mechanistic teaching diagram

Slide 57 · Management approaches and intended targets

Approach

Immediate target

Source caveat

Albumin / nutritional support

Protein depletion / nutrition

Supportive, not receptor-directed

Infection treatment

Associated infection

Helpful in selected cases

EGFR-blocking antibody

Receptor activation

Can be effective

Gastrectomy

Severe gastric disease

Reserved option in severe cases

Slide 58 · Clinical reasoning: Adult presentation

Hypothetical: An adult has enlarged body/fundus rugae, peripheral edema, and low circulating protein.

A tissue sample shows exuberant foveolar mucous epithelium with tortuous and dilated glands.

Which pattern unifies the anatomy, histology, and systemic findings?

Reasoning target: Ménétrier disease: Foveolar hyperplasia plus gastric protein loss.

Slide 59 · Clinical reasoning: A child after infection

Hypothetical: A child develops gastric fold enlargement and protein loss after an infectious illness.

The source describes a frequently self-limited pediatric pattern, often linked to CMV.

What biological event can accompany return of normal architecture?

Reasoning target: Viral clearance with normalization of epithelial proliferation.

Slide 60 · Diagnostic reasoning: Giant folds and ulcers

Hypothetical: A patient has markedly thick gastric folds together with prominent peptic ulcers.

Biopsy shows expansion of the parietal-cell compartment rather than foveolar predominance.

Which hypertrophic gastropathy is the better match?

Reasoning target: Zollinger–Ellison syndrome (gastrinoma-associated).

Slide 61 · Morphology challenge: A cystic gland is not enough

Hypothetical: A gastric sample contains cystically dilated glands.

The distribution, dominant cell type, and injury/surgery context are not yet known.

Can cystic dilation alone distinguish Ménétrier disease from gastritis cystica?

Reasoning target: No. Use gland compartment, tissue depth, distribution, and context.

Slide 62 · High-yield diagnostic synthesis

Body/fundus-predominant giant folds plus dominant foveolar hyperplasia define the morphological core.

Elongated tortuous/cystically dilated glands coexist with parietal/chief-cell hypoplasia.

Gastric albumin loss explains hypoproteinemia and edema.

Slide 63 · High-yield mechanism and clinical synthesis

Excess TGF-α stimulates EGFR signaling on gastric epithelium.

Children often have infection-associated, reversible disease; Adults have an increased gastric cancer association.

Supportive replacement, selected infection treatment, EGFR blockade, and surgery are described options.

Slide 64 · Selected source

Robbins, Cotran & Kumar. Pathologic Basis of Disease. 11th ed. (2026). Chapter 17, “Hypertrophic Gastropathies” and “Ménétrier Disease,” pp. 702–703; Table 17.5 and Fig. 17.18 caption.

Lecture concepts are drawn from the supplied Robbins excerpt and its immediately adjacent stomach/hypertrophic-gastropathy context. Original textbook figure 17.18 was not reproduced.