Oral manifestation and gingival biopsy contributing to the early diagnosis of Langerhans cell histiocytosis in a paediatric patient. - Kidwai AA; Trimukhe A; Shrivastava N; Shukla A; Tewari N; Surya V; Mishra D; Mathur VP; Bansal K; Rahul M (European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 2026)