PMC6370127_01
The 1st thoracentesis which is performed on day 1 of admission drainaged egg-yellow effusion.
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F1
The 1st thoracentesis which is performed on day 1 of admission drainaged egg-yellow effusion (Fig. 1).
CT angiography scan of the chest showed left lower pulmonary embolism (blue arrow). CT = computed tomography.
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F2
CT angiography (day 15) were all performed during early hospitalization. GeneXpert MTB/RIF test on pleural effusion was negative. Chest CT angiography demonstrated left lower pulmonary embolism (Fig. 2).
Paraffin electron microscopy of pleural biopsy was consistent with pleural amyloidosis.
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F3
Paraffin electron microscopy of pleural biopsy was consistent with pleural amyloidosis (Fig. 3).
The lesion mainly comprised amyloid deposition showing Congo red stain was positive in the pleural tissue.
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F4
Congo red stain was positive in the pleural tissue (Fig. 4).
Parietal pleura at polarized light, there was an apple green refringence, confirmed the deposition of amyloid substance.
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F5
When viewed under polarized light, the affected tissue typically shows apple-green birefringence after staining with Congo red (Fig. 5).
The stainability of Congo red stain was not lost by potassium permanganate treatment, and the lesion of parietal pleural tissue was pathologically confirmed to be amyloidosis excluding the amyloid protein A (AA) type.
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F6
The stainability of Congo red stain was not lost by potassium permanganate treatment, the lesion was pathologically confirmed to be amyloidosis, excluding the amyloid protein A (AA) type (Fig. 6).
Through timely anticoagulant therapy, chest CT angiography scan which was performed 13 days after the diagnosis of pulmonary embolism did not see previous pulmonary embolism lesion. CT = computed tomography.
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F7
Thirteen days later, chest CT angiography did not see previous pulmonary embolism lesion (Fig. 7).