Management of Estrogen‑Induced Irregular and Heavy Bleeding in Perimenopausal Women with an Intact UterusPathophysiology of Unopposed EstrogenHormone‑Therapy Regimens that Protect the EndometriumDiagnostic Evaluation Before Initiating TherapyRecommended Estrogen‑Progestogen Combination for Vasomotor Symptoms or Premature MenopauseMonitoring and Management of Persistent BleedingSafety Pitfalls to AvoidEvidence Strength