Histologic Distribution of Pulmonary Tumors in Lebanon: A 5-Year Single Institution Experience

Percutaneous core needle biopsy in the diagnosis of lung lesions: An experience on 280 consecutive cases from a university hospital in southern India

Context:

Percutaneous needle biopsy of lung (PCNBL) is advantageous over bronchoscopic biopsies to obtain adequate sample for peripheral lung lesions.

Objective:

The objective was to evaluate the diagnostic yield of image-guided PCNBL in the diagnosis of lung lesions and to classify lung carcinomas as per the recently proposed International Association for the Study of Lung Cancer (IASLC)/American Thoracic Society/European Respiratory Society classification for small biopsies modified and adopted by the World Health Organization, 2015.

Materials and Methods:

A total of 280 image-guided PCNBL were analyzed. The radiological findings and routine hematoxylin and eosin (H&E)-stained sections along with immunohistochemistry (IHC) were analyzed in all the cases. Molecular testing was done depending on tissue diagnosis and availability.

Results:

Majority (81%) were diagnosed as malignant lesions, with adenocarcinoma (ADC) being the most common. More than 70% were diagnosed on H&E morphology alone, with thirty cases requiring IHC to categorize as ADC. Nearly 60% were categorized as squamous cell carcinoma on morphology alone and the rest required IHC. Though TTF1 showed higher sensitivity than napsin A, the latter is more specific. Both p63 and p40 were found to be highly sensitive for squamous cell carcinoma, but p40 was more specific than p63. Epidermal growth factor receptor could be evaluated on 94.4% of ADC samples, indicating good yield for molecular testing.

Conclusion:

PCNBL yields adequate sampling for tissue diagnosis and ancillary testing with minimal complications. The use of IHC markers reduces the number of non-small-cell not otherwise specified cases significantly.

A histopathological analysis of lung cancers. An 11-year retrospective study from Al-Madinah Al-Munawwarah, Saudi Arabia

Objectives:

To determine the histopathological pattern of lung cancers in Madinah, Saudi Arabia.

Methods:

This retrospective histopathology-based study was conducted at the Department of Pathology, King Fahad Hospital, Madinah, Saudi Arabia and comprised cases of lung cancers for 11 years between January 2006 and December 2017. The data was obtained from histopathologic reports and evaluated for age, gender, site of tumor, and histopathological patterns with grade.

Results:

A total of 138 patients with lung cancers were identified, 103 (74.6%) patients were males and 35 (25.4%) patients were females with a male to female ratio of 2.9:1. The ages ranged from 6 to 97 years with a mean age of 60.6 ± 14.7 years. Adenocarcinoma (AC) was the most common pathological type (47.8%), followed by squamous cell carcinoma (SCC) (25.3%), neuroendocrine tumor (8.7%) and metastatic carcinoma (8%). Both ACs and SCCs showed a male predominance with a ratio of 2.9:1 (male) and 4.8:1 (female). The majority of ACs (56.5%) and SCCs (65.7%) were moderately differentiated.

Conclusion:

The study established a baseline of lung cancer pattern on the basis of histopathological experience in a tertiary referral hospital in Al-Madinah Al-Munawwarah, Saudi Arabia. The results obtained showed similarities with that in the world literature and Saudi national studies.