Primary malignant tracheal tumors are not common and adenoid cystic carcinoma (ACC) of trachea is rare. We report an extremely rare case of ACC of proximal trachea, which was diagnosed in a 42-year-old male who presents with 6-month history of dyspnea. Lateral skiagram of neck, computed tomography, and magnetic resonance imaging revealed a broad-based polypoidal soft tissue mass arising from posterior wall of the proximal trachea. Biopsy confirmed the diagnosis of ACC. The patient was treated by surgical resection followed by radiotherapy and is on regular follow-up. Follow-up at 18 months post-treatment showed no local recurrence or distant metastases. The literature on tracheal ACC is reviewed. Image findings are briefly discussed.
Even though small tumors were difficult to visualize, sonography can play an important role in assessment of tumor extension in large growths, especially when MRI is unavailable, contraindicated, or unaffordable, and for posttreatment follow-up.
US and CT have high diagnostic performance in evaluating thyroid cartilage invasion. US is more sensitive than CT in diagnosing invasion of the thyroid cartilage; however, the difference is not statistically significant. US can be used to solve the diagnostic dilemma of the presence or absence of cartilage invasion when CT is inconclusive, as CT is more widely used in staging laryngeal and hypopharyngeal cancers.
Even though small tumors are difficult to visualize, US can play a significant role in the assessment of tumor extension within and beyond the larynx, especially when cross-sectional imaging is either unavailable or unaffordable.
Background: Carcinoma of the gall bladder (GB) is the commonest malignancy of the biliary tract. Ultrasound (US) guided Fine Needle Aspiration Cytology (FNAC) plays a major role in early detection of malignancy in a suspicious GB lesion. The aim of this study was to evaluate the safety and diagnostic accuracy of US guided FNAC in detection of GB malignancy, to find the association of gall stones with GB malignancy, to study the ultrasound pattern of GB malignant mass and demographic profile of the disease in North eastern India.Methods: The study was conducted retrospectively in Dr. B. Borooah Cancer Institute, Guwahati from January 2016 to December 2017. A total number of 173 patients suspected to have GB malignancy were subjected to US guided FNAC.Results: Total 161 patients were positive for malignancy with significant female majority. There were 124 female (77.02%) and 37 males (22.98%) in the range of 29 to 82 years. Male female ratio was 1:3.5. One was diagnosed as xanthogranulomatous cholecystitis and another was chronic cholecystitis. FNAC remained inconclusive in 2 patients. There was no major procedure related complication. Adenocarcinoma was the most common malignancy found in 146 patients (98.68%). Cholelithiasis was associated in 88.19% of malignant lesions.Conclusions: US-guided FNAC is a safe, highly accurate and reliable procedure for early detection of GB malignancy.
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