Lung Cancer in Men vs. Women: Symptoms and Ocular Metastasis

Lung cancer ranks among the top three diseases in the US nationwide, exceeded only by breast and prostate cancers. Beyond general systemic differences, the disease can also impact vision and eye health through direct tumor growth, paraneoplastic syndromes, treatment side effects, or general health decline according to recent findings.

Women More Likely to Develop Adenocarcinoma

Women are more likely to develop adenocarcinoma, a type of non-small cell lung cancer that begins in the glandular cells lining the outer lung areas. This form often grows more slowly, resulting in potential delays in diagnosis and vague non-specific symptoms such as fatigue and back or chest pain. Adenocarcinoma is also the most common form of lung cancer among non-smokers, a group in which women and younger women are overrepresented.

By contrast, men tend to develop squamous cell carcinoma, a non-small cell lung cancer typically found in the central airways.

Lung Cancer Cells Can Spread to Ocular Tissues

While the primary site of lung disease is in the lungs, its influence can extend to the delicate structures of the eyes. Direct metastasis occurs when cancer cells travel through the bloodstream or lymphatic system to reach ocular tissues. Orbital metastasis affects the tissues surrounding the eye within the orbit, causing pressure that can lead to pain, proptosis, double vision, and difficulty moving the eye. Intraocular metastasis spreads directly into the eye itself, affecting structures such as the iris, ciliary body, choroid, or retina, which can manifest as vision loss, floaters, eye redness or inflammation, and pupil abnormalities.

In addition to direct metastasis, patients may experience paraneoplastic syndromes where the immune system mistakenly attacks healthy tissues in the eye. These include opsoclonus-myoclonus syndrome—a rare neurological disorder associated with small cell lung cancer that causes rapid, jerky eye movements and muscle jerks—as well as retinal degeneration, where antibodies produced by certain lung cancers attack the retina and lead to progressive vision loss.