Malignant Mesothelioma Mimicking Invasive Mammary Carcinoma in a Male Breast

Figure 1

(a) Anteroposterior chest X-ray shows pleural thickening along the right lateral chest wall and blunting of the right costophrenic angle. (b) A chest CT scan shows extensive pleural thickening on the right side and calcified pleural plaque on the left side. (c) A breast ultrasound shows an irregular, hypoechoic mass measuring 5.6 × 2.9 × 3.6 cm. A portion of the mass involves pectoralis muscle and extends into the intercostal muscles. (d) Pleural biopsy shows plaque formation with dense fibrosis, minimal inflammation, and dystrophic calcification with no evidence of malignancy.

(a)

(b)

(c)

(d)