Tracheal Adenoid Cystic Carcinoma With Chronic Asthma

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Tracheal-Adenoid Carcinoma
Endobronchial biopsy. (a) Bronchial mucosa contains infiltrative neoplastic lesions with tubular and cribriform patterns (H&E stain, ×100). (b) Tubular and cribriform structures of the neoplasm (H&E stain, ×400).

35-year-old female patient with history of chronic asthma presented with cough and shortness of breath, diagnosed with tracheal adenoid carcinoma.

A 35-year-old female patient presented with a 1-year history of cough and shortness of breath. The clinical and investigation findings were consistent with tracheal adenoid cystic carcinoma.

Doctors were currently treating her for asthma. However, she did not respond to treatment and developed hemoptysis. CT findings were remarkable of a soft tissue mass arising from the posterior and lateral wall of the trachea with mediastinum extension. Bronchoscopy revealed a tracheal mass 3 cm above carina with invasion of the lateral wall. The mass was biopsied with bronchial washing.

Histopathological analysis

The bronchial washing specimen was used for preparing alcohol-fixed smearing. Including, staining of smears with modified Papanicolaou method. Similarly, cytology showed hypercellular smears composed of loosely cohesive sheets. Dispersed cells and three dimensional clusters. The size of the cells was relatively small with round nuclei, small nucleoli and a scant cytoplasm. The smears showed different sizes of accellular hyaline materials with globule formation. In addition, the tumour cells were also encapsulating them.

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Cytology smears. (a) Sheets, three-dimensional clusters, and dispersed cells with hyaline materials (Papanicolaou stain, ×100). (b) Clusters of neoplastic cells surrounding hyaline globules (Papanicolaou stain, ×400).

In addition, a cell block was prepared with thrombin method. The cell block showed nests and strands with tubular-like structures and a cribriform pattern containing homogenous acidophilic materials.

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Cell block slide. (a) Tubular-like structure and cribriform pattern with acidophilic materials (H&E stain, ×100). (b) Small nests and strands of tumor cells (H&E stain, ×400).

Biopsy findings were consistent with the diagnosis of adenoid cystic carcinoma. Similarly, the biopsy showed bronchial mucosa with infiltrative neoplastic lesions composed of tubular and cribriform structures with acidophilic materials. The initial treatment plan was referring her for resection surgery. However, because resecting the tumour completely was not possible, she was advised radiotherapy.

References

Tracheal Adenoid Cystic Carcinoma Presented with Chronic Asthma Diagnosed by Bronchial Washing Cytology https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6988659/

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Dr. Aiman Shahab is a dentist with a bachelor’s degree from Dow University of Health Sciences. She is an experienced freelance writer with a demonstrated history of working in the health industry. Skilled in general dentistry, she is currently working as an associate dentist at a private dental clinic in Karachi, freelance content writer and as a part time science instructor with Little Medical School. She has also been an ambassador for PDC in the past from the year 2016 – 2018, and her responsibilities included acting as a representative and volunteer for PDC with an intention to make the dental community of Pakistan more connected and to work for benefiting the underprivileged. When she’s not working, you’ll either find her reading or aimlessly walking around for the sake of exploring. Her future plans include getting a master’s degree in maxillofacial and oral surgery, settled in a metropolitan city of North America.

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