Differential Diagnosis for Unilateral Swollen Tonsilar and Submandibular Lymph Nodes
- Single Most Likely Diagnosis
- Tonsillitis or Peritonsillar Abscess: This is the most likely diagnosis due to the presence of a unilateral swollen tonsil, which is a common presentation of tonsillitis or peritonsillar abscess. The swelling of the submandibular lymph nodes is consistent with the body's immune response to infection in the tonsil area.
- Other Likely Diagnoses
- Tonsil Stones (Tonsilloliths): Although tonsil stones can cause bad breath and discomfort, they can also lead to inflammation and potentially cause lymphadenopathy, making them a plausible cause for the symptoms described.
- Mononucleosis (Infectious Mononucleosis): Caused by the Epstein-Barr virus, this condition can lead to swollen lymph nodes, including those in the submandibular area, and can also cause tonsillar swelling, although it is typically bilateral.
- Dental Infection: An infection originating from a tooth can spread to the lymph nodes in the submandibular area and cause swelling and pain, potentially affecting the tonsil area if the infection spreads.
- Do Not Miss Diagnoses
- Squamous Cell Carcinoma of the Tonsil: Although less common, cancer of the tonsil can present with unilateral tonsillar swelling and lymphadenopathy. Given the potential severity of this diagnosis, it is crucial not to miss it.
- Lymphoma: Both Hodgkin and non-Hodgkin lymphoma can present with lymph node swelling, including in the submandibular area, and can be associated with tonsillar swelling if the lymphoma involves the tonsil area.
- Rare Diagnoses
- Actinomycosis: A rare bacterial infection that can cause abscesses and lymphadenopathy, including in the submandibular area, and could potentially involve the tonsils.
- Tuberculosis: Although rare in many parts of the world, tuberculosis can cause lymphadenopathy and could potentially affect the tonsils, presenting with similar symptoms.
- Sarcoidosis: A condition that can cause inflammation in various parts of the body, including the lymph nodes and potentially the tonsils, leading to swelling and other symptoms.