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History And Examination | Oral Cavity / Buccal Cavity | Otorhinolaryngology (Ear Nose Throat / E.N.T) | 4th Year (Fourth Year) | MBBS | Detailed Free Notes

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1. IMPORTANCE OF HISTORY AND EXAMINATION IN ORAL CAVITY (EXAM OPENING LINE)

  • Diseases of the oral cavity are common, visible, and clinically accessible

  • Many serious pathologies (oral cancer, premalignant lesions) are diagnosed only through proper history and meticulous examination

  • Oral cavity examination is a core OSCE skill in ENT

  • Poor history or incomplete examination is a major cause of missed diagnosis

Exam Line

A thorough history and systematic examination are essential for diagnosis of oral cavity diseases.

2. HISTORY TAKING IN ORAL CAVITY DISEASES (STEP-WISE, EXAM-READY)

2.1 IDENTIFICATION DATA

  • Name, age, gender

  • Occupation (very important)

    • Farmers, laborers, drivers → high tobacco exposure

  • Address (rural vs urban)

2.2 CHIEF COMPLAINTS (VERY HIGH-YIELD)

Always record duration with each complaint.

Common complaints include:

  • Ulcer in mouth

  • Pain in oral cavity

  • Swelling or lump

  • Difficulty in chewing

  • Difficulty in swallowing

  • Bleeding from mouth

  • Altered speech

  • Restricted mouth opening (trismus)

  • Burning sensation

  • Excessive salivation or dryness

  • Bad breath (halitosis)

  • Change in taste

Exam Tip

Duration + progression is more important than symptom itself.

2.3 HISTORY OF PRESENT ILLNESS (SYSTEMATIC APPROACH)

A. PAIN

Ask:

  • Site

  • Onset (sudden / gradual)

  • Nature:

    • Burning

    • Sharp

    • Dull

  • Radiation:

    • Ear

    • Jaw

    • Head

  • Severity

  • Aggravating factors:

    • Chewing

    • Hot/spicy food

  • Relieving factors

Clinical Correlation

  • Burning pain → aphthous ulcer, glossitis

  • Severe pain with trismus → peritonsillar / deep infection

  • Painless ulcer → suspect malignancy

B. ULCER

Ask:

  • Duration

  • Single or multiple

  • Painful or painless

  • Recurrent or first episode

  • Increase in size

  • Bleeding on touch

  • Healing or non-healing

Exam Line

Any ulcer persisting more than 2 weeks should be considered malignant until proven otherwise.

C. SWELLING / LUMP

Ask:

  • Site (lip, cheek, tongue, floor of mouth)

  • Size progression

  • Painful or painless

  • Consistency

  • Associated ulceration

  • Difficulty in speech or swallowing

Clinical Correlation

  • Painless, progressive lump → malignancy

  • Fluctuant swelling in floor → ranula

D. BLEEDING FROM MOUTH

  • Spontaneous or trauma-induced

  • Associated ulcer

  • Amount and frequency

E. DIFFICULTY IN CHEWING / SWALLOWING

  • Oral phase difficulty suggests:

    • Tongue lesions

    • Poor dentition

    • Xerostomia

  • Ask about nasal regurgitation

F. SPEECH PROBLEMS

  • Slurring

  • Hypernasality

  • Reduced articulation

G. RESTRICTED MOUTH OPENING

  • Suggests:

    • Submucous fibrosis

    • Peritonsillar abscess

    • TMJ disorders

2.4 HISTORY OF HABITS (EXTREMELY IMPORTANT – EXAM FAVORITE)

Ask in detail about:

  • Smoking

  • Chewing tobacco

  • Betel nut

  • Gutka

  • Naswar

  • Alcohol intake

Include:

  • Duration

  • Frequency

  • Type

Exam Line

Tobacco chewing is the most important risk factor for oral cancer.

2.5 PAST HISTORY

  • Recurrent oral ulcers

  • Previous oral surgery

  • Radiotherapy to head and neck

  • Trauma

  • Dental procedures

2.6 MEDICAL HISTORY

  • Diabetes mellitus

  • Anemia

  • Immunosuppression

  • HIV

  • Autoimmune diseases

2.7 DRUG HISTORY

  • Steroids

  • Chemotherapy

  • Anticholinergics

  • Antiepileptics (gingival hyperplasia)

2.8 FAMILY HISTORY

  • Oral cancer

  • Genetic syndromes (e.g., Fanconi anemia)

3. GENERAL PHYSICAL EXAMINATION (MUST NOT BE MISSED)

3.1 GENERAL CONDITION

  • Nutritional status

  • Pallor

  • Weight loss

  • Cachexia

3.2 VITAL SIGNS

  • Fever → infection

  • Tachycardia → pain, anemia

4. EXAMINATION OF ORAL CAVITY (STEP-WISE, OSCE-PERFECT)

4.1 PREPARATION

  • Good illumination

  • Gloves

  • Tongue depressor

  • Ask patient to remove dentures

5. INSPECTION OF ORAL CAVITY

5.1 LIPS

Inspect for:

  • Ulcers

  • Cracks

  • Pigmentation

  • Growths

  • Leukoplakia

Clinical Note

  • Lower lip → common site of squamous cell carcinoma

5.2 BUCCAL MUCOSA

Inspect:

  • Color

  • Ulcers

  • White patches

  • Red patches

  • Fibrotic bands

High-Yield

  • Submucous fibrosis → blanching, fibrous bands

5.3 TEETH AND GINGIVA

Inspect:

  • Dental caries

  • Gingivitis

  • Bleeding gums

  • Poor oral hygiene

5.4 HARD PALATE

Inspect for:

  • Ulcers

  • Growths

  • Pigmentation

  • Midline defects

5.5 SOFT PALATE

Inspect:

  • Symmetry

  • Movement during phonation

  • Ulcers or growths

5.6 TONGUE (EXTREMELY IMPORTANT)

Ask patient to:

  • Protrude tongue

  • Move side to side

Inspect:

  • Dorsum

  • Lateral borders (most common cancer site)

  • Ventral surface

5.7 FLOOR OF MOUTH

Inspect:

  • Swelling

  • Ulcers

  • Ranula

  • Salivary duct openings

6. PALPATION OF ORAL CAVITY (EXAM GOLD)

6.1 LIPS AND CHEEKS

  • Induration

  • Tenderness

  • Fixity

6.2 TONGUE PALPATION

  • Palpate lateral borders

  • Assess:

    • Induration

    • Fixity

    • Tenderness

6.3 FLOOR OF MOUTH (BIMANUAL PALPATION)

  • One finger intraoral

  • Other hand under chin

Exam Line

Bimanual palpation is essential for floor of mouth examination.

7. EXAMINATION OF NECK (MANDATORY)

Inspect and palpate:

  • Submental nodes

  • Submandibular nodes

  • Jugulodigastric nodes

Clinical Correlation

  • Oral cancer spreads early to cervical lymph nodes

8. FUNCTIONAL EXAMINATION

8.1 TONGUE MOVEMENTS

  • Protrusion

  • Lateral movement

Deviation → hypoglossal nerve palsy

8.2 SPEECH ASSESSMENT

  • Articulation

  • Nasality

8.3 SWALLOWING

  • Ask about difficulty with solids/liquids

9. SPECIAL TESTS (WHEN INDICATED)

  • Taste testing

  • Salivary flow assessment

  • Biopsy of suspicious lesions

  • Imaging (CT / MRI) if deep extension suspected

10. COMMON OSCE SCENARIOS

  • Non-healing ulcer on lateral tongue

  • Trismus with fibrotic bands

  • Floor of mouth swelling

  • Enlarged cervical lymph nodes

11. DIFFERENTIAL DIAGNOSIS BASED ON FINDINGS

Finding Likely Diagnosis
Painless non-healing ulcer Oral carcinoma
Burning sensation Aphthous ulcer
Fibrous bands Submucous fibrosis
Fluctuant floor swelling Ranula
White patch Leukoplakia

12. EXAMINER TRAPS

  • Not inspecting lateral tongue

  • Skipping bimanual palpation

  • Ignoring neck examination

  • Missing habit history

  • Calling painful ulcer malignant

13. CLINICAL PEARLS (EXAM GOLD)

  • Any oral ulcer >2 weeks → malignancy until proven otherwise

  • Tobacco history is mandatory

  • Neck examination is part of oral cavity exam

  • Palpation detects induration missed on inspection

  • Lateral border of tongue is the most common cancer site

Written And Compiled By Sir Hunain Zia (AYLOTI), World Record Holder With 154 Total A Grades, 7 Distinctions And 11 World Records For Educate A Change MBBS 4th Year (Fourth Year / Professional) Otorhinolaryngology (ENT) Free Material

Hunain Zia

Hunain Zia has previously achieved considerable success in the high-school educational stream, gaining a massive 154 Total A Grades and 7 Major Distinctions, a process in which he broke/ set 11 different world records, including the most A grades ever achieved, most subjects ever appeared in, most distinctions, gaining distinctions across two separate boards (Pearson Edexcel and CAIE) within the same year/ ever, and even 19 hours of constant examination. All records stand intact today. Hunain pursued his Honors Accounting Degree from the prestigious Bentley University, and then completed an LLB (in Honors) from University of London. Currently, he manages multiple social and commercial projects, has founded digital streams and works tirelessly in the education sector.

Educate A Change focuses on truly bringing change in the educational sector worldwide. All our courses are designed to ensure success, and provide complete preparation without requiring any other external material. Therefore, it takes away the expense of academies, books, past paper compilations and other miscellaneous items. Instead, by just the courses we offer, the student can prepare fully for the best grades in their CAIEs, Edexcel and other high-school exams. The earnings from our course-sales are invested in social projects and growing the free educational activities of Educate A Change.