The Case Begins

A 60-year-old gentleman came to our clinic with a persistent cough, increasing breathlessness, poor appetite, and a general sense of fatigue and ill health.

A chest X-ray revealed a significant collection of fluid around his right lung, a condition known as pleural effusion. To understand this better, imagine the lung as a balloon sitting inside a thin protective pouch. When fluid accumulates within that pouch, it begins to compress the lung, making it difficult for it to expand fully during breathing.

A CT scan confirmed that the fluid had partially compressed the right lung. To investigate further, a bronchoscopy was performed. While there was no tumour visible within the airways, there appeared to be narrowing caused by pressure from outside the airway itself—an early clue that this case might not be straightforward.

Clinical Diagnostics Evaluation

In countries where tuberculosis (TB) is common, doctors frequently use a marker called ADA (Adenosine Deaminase) in pleural fluid to help identify patients likely to have TB-related pleural effusions. The pleural fluid was drained on three separate occasions, both to relieve his breathlessness and to establish the diagnosis. Each analysis appeared to support tuberculosis:

• ADA level: consistently elevated at 44 U/L, a value often associated with TB.
• Lymphocyte-predominant exudative fluid: a pattern commonly seen in tuberculous pleural effusion.
• Pleural fluid cytology: negative for malignant cells on three separate examinations.

The Resolution

The fluid was real. The elevated ADA was real. The inflammation was genuine. But the cancer itself was hiding within the pleural tissue rather than floating freely in the fluid. Multiple small abnormal nodules were identified over the pleural surface. Biopsies were obtained from these suspicious areas. The histopathology report provided the answer that three separate fluid analyses had failed to reveal. The underlying diagnosis was malignancy.

The Case Begins

A 45-year-old woman with asthma developed gradually worsening breathlessness over several weeks. Activities such as climbing stairs and performing household chores became increasingly difficult, leaving her breathless and exhausted.

The patient had a history of asthma and obesity (BMI 29) and had remained reasonably stable for years. As her breathlessness progressed, she initially assumed it was related to worsening asthma, weight gain, or stress. Concerned by her persistent symptoms, she checked her oxygen saturation at home and found it to be 78%.

She sought medical attention and was initially treated for a presumed asthma exacerbation with steroids, antibiotics, and supportive therapy. Despite treatment, her oxygen levels remained persistently low. The lack of improvement raised concerns that another diagnosis might be responsible for her symptoms.

Clinical Diagnostics Evaluation

When she presented to our clinic, the combination of progressive breathlessness and persistent hypoxaemia prompted a more detailed evaluation. An echocardiogram suggested markedly elevated pressures within the lung circulation. She was admitted for comprehensive assessment, and further investigations were performed to identify the underlying cause.

• Oxygen saturation: 78% on home pulse oximetry despite treatment.
• Echocardiogram: suggested markedly elevated pressures within the pulmonary circulation.
• Investigations excluded common causes of pulmonary hypertension including heart disease, chronic lung disease, pulmonary blood clots, and autoimmune disorders.
• Right heart catheterisation confirmed the diagnosis of Idiopathic Pulmonary Arterial Hypertension (IPAH).

The Resolution

Over the following months, her breathlessness improved, her activity levels increased, and she regained confidence in carrying out daily activities. Although pulmonary arterial hypertension remains a serious condition, timely diagnosis and appropriate treatment substantially improved her quality of life.

The Case Begins

A 45-year-old woman presented with a persistent cough lasting nearly 120 days, accompanied by a low-grade intermittent fever. Despite multiple consultations and treatments, her symptoms continued to recur.

The patient had undergone extensive evaluation including blood investigations, chest X-rays, and a Contrast-Enhanced Computed Tomography (CECT) scan of the chest and abdomen. All imaging studies appeared normal. Because no significant abnormality was identified, she was treated for chronic bronchitis and severe cough-variant asthma with multiple courses of antibiotics and oral steroids.

The oral steroids provided only temporary relief. Her cough would improve briefly before returning aggressively within days. This unusual response raised suspicion that the underlying cause was being masked rather than treated. The possibility of a hidden airway disease was considered despite repeatedly normal imaging.

Clinical Diagnostics Evaluation

Traditional radiological investigations failed to identify the source of her symptoms because the infection was confined entirely within the airway lining rather than the lung tissue itself. Recognising that the pathology might be hidden inside the bronchial tree, a flexible bronchoscopy was performed. Direct visualisation revealed a severely inflamed and ulcerated lesion obstructing the right main bronchus.

• Persistent cough lasting approximately 120 days despite repeated treatment.
• Chest X-rays and Contrast-Enhanced CT scans of the chest and abdomen were completely normal.
• Temporary improvement with oral steroids followed by rapid recurrence of symptoms.
• Flexible bronchoscopy revealed a raw, inflamed, ulcerated lesion in the right main bronchus.
• Targeted biopsy and bronchial washings confirmed Tuberculosis.
• Final diagnosis: Endobronchial Tuberculosis (EBTB).

The Resolution

Within weeks of starting Anti-Tubercular Therapy, the patient's four-month-long cough resolved completely. The airway began healing, and the risk of permanent bronchial narrowing was avoided through timely intervention.

The Case Begins

A 54-year-old man presented with a persistent productive cough, chest rattling, and a non-resolving pneumonia that had persisted for months despite multiple courses of antibiotics.

The patient had undergone repeated treatment with broad-spectrum antibiotics for a localized pneumonia affecting the right lower lobe. Despite treatment, his symptoms continued and follow-up chest X-rays and CT scans showed a persistent area of inflammation that remained unchanged over time.

Multiple antibiotic regimens failed to provide meaningful improvement. The persistent lung shadow and ongoing symptoms suggested that a simple infection was unlikely to be the entire explanation. The possibility of an underlying mechanical airway obstruction was considered, as bacteria continued to thrive despite appropriate antimicrobial therapy.

Clinical Diagnostics Evaluation

A flexible bronchoscopy was performed to directly examine the airways. Deep within the right lower lobe bronchus, an unexpected foreign body was discovered. Hidden beneath inflamed tissue was a calcified object completely obstructing the airway. The object was identified as a human tooth, resulting in post-obstructive pneumonia caused by occult foreign body aspiration.

• Persistent non-resolving pneumonia despite multiple courses of broad-spectrum antibiotics.
• Stable right lower lobe inflammatory shadow on serial chest imaging.
• Flexible bronchoscopy revealed complete obstruction of the right lower lobe bronchus.
• A human tooth was identified as the obstructing foreign body.
• Final diagnosis: Post-obstructive pneumonia secondary to occult foreign body aspiration.

The Resolution

Following successful bronchoscopic extraction, the patient's airway reopened and normal drainage was restored. Within weeks, the chronic infection resolved completely, the cough disappeared, and follow-up imaging demonstrated significant clearing of the previously persistent lung shadow.