Anatomical challenges & management of Retromolar trigone Carcinoma - Dr Sasi Krishna K

Anatomical challenges & management of Retromolar trigone Carcinoma - Dr Sasi Krishna K

🎙 Dr Sashi Krishna K 👥 8K 📅 September 21, 2026 ⏱ 55 min 👁 25 📄 expert opinion 🧭 2026-09-21
Available in: English (current) Français

Keywords

retromolar trigone carcinomapterygomandibular raphemandibulectomyimaging evaluationneck dissection

Summary

This postgraduate teaching presentation by Dr Sashi Krishna K focuses on the anatomical challenges and management of retromolar trigone (RMT) carcinoma. It begins with a detailed anatomy review, highlighting the pterygomandibular raphe as a key landmark and its clinical significance. The proximity of RMT mucosa to the mandible leads to early bone erosion, and the spread patterns along the raphe often involve the masticator space and oropharynx. Imaging protocols emphasize thin-slice CT with puff-cheek technique and MRI for marrow and perineural involvement. The speaker discusses lymphatic drainage, with level II as the primary basin, and cites a systematic review reporting 38% nodal metastasis at presentation. Management has evolved from radical radiotherapy to surgery-first with risk-adapted adjuvant therapy. Surgical approaches include peroral, transfacial, and combined techniques, with attention to trismus and skin involvement. Reconstruction is mandatory to prevent trismus, often using vascularized bone flaps. The talk concludes with prognostic factors, noting that invasion beyond the raphe predicts worse local recurrence and survival. Overall, the lecture provides a comprehensive overview for surgical trainees, emphasizing clinical decision-making based on anatomical and radiological assessment.

180 words

Critical Evaluation

Value of the Information & Strength of the Argument

The value of this presentation lies in its systematic integration of anatomical knowledge with clinical management. The speaker emphasizes practical decision-making, such as when to perform marginal vs segmental mandibulectomy based on Imaging and intraoperative findings. The argumentation is supported by references to key studies, including the Korean systematic review and institutional papers, which strengthens the evidence base. However, some recommendations are based on anecdotal experience, particularly regarding surgical incisions and reconstructive choices, which are not always backed by comparative trials. The discussion of the pterygomandibular raphe as a prognostic marker is particularly valuable, linking anatomical detail to patient outcomes.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is moderate to high: the speaker cites several peer-reviewed articles and systematic reviews, ensuring a foundation in current literature. However, some references are not fully detailed (e.g., the Japanese study or the institutional papers), and no specific citations are provided in the transcript for listeners to verify. The title accurately represents the content, with both anatomical and management dimensions covered thoroughly. The presentation is consistent with evidence-based practice, but the lack of explicit source URLs in the video description limits transparency.

199 words

Title / Content Match

The title accurately reflects the content, covering both anatomical challenges and management strategies for retromolar trigone carcinoma.

Quality & Reliability

7/10

The presentation is grounded on recognized anatomical and oncological principles, referencing multiple studies including a large Korean systematic review and institutional series. The speaker is an expert, and the content is well-structured, though some claims rely on personal experience rather than formal evidence.

Key Moments

Cited Sources

  • Classification of pterygomandibular raphe (Gasser) — Referenced for classification of pterygomandibular raphe types and clinical relevance.
  • Japanese study on significance of pterygomandibular raphe in retromolar and buccal cancers — Cited for prognostic significance of invasion beyond the raphe on local control and survival.
  • CT and MR evaluation in retromolar trigone cancers (Tata Memorial and Western papers) — Two papers highlighted for imaging assessment and staging of RMT cancers.
  • Systematic review from Korea on 4,838 patients with retromolar trigone cancer — Provides data on advanced disease presentation, nodal metastasis, and surgical outcomes.
  • Publication from ACTREC on transfacial approach for early retromolar trigone cancers — Discusses a surgical approach using nasolabial flap for access without additional incisions.
  • Publication from ACTREC comparing anterior vs posterior marginal mandibulectomy — Evaluates oncological safety of marginal mandibulectomy locations in RMT cancers.

Contribution & Novelties

The presentation synthesizes current knowledge on retromolar trigone carcinoma with a strong focus on the pterygomandibular raphe as a key anatomical landmark influencing spread and prognosis. It emphasizes practical surgical considerations, including incision choices and mandibular management, offering a comprehensive guide for trainees. The inclusion of institutional experience adds a real-world perspective not always present in standard reviews.

Pour aller plus loin :

  • Retromolar trigone anatomy — Provides a concise anatomical overview, useful for understanding the location and relationships.
  • Pterygomandibular raphe — Explains the structure and its clinical relevance in head and neck pathology.
  • Oral squamous cell carcinoma — For additional context on the epidemiology and treatment of the most common cancer type in this region.

116 words

Radar Profile

The profile shows high scores in quantity, quality, and technical level, indicating a dense and specialized presentation. The slightly lower fiabilite_globale (8) reflects the reliance on expert opinion and some unpublished institutional data, though still within acceptable range for a teaching lecture.

Reliability 8/10