case_images: PMC11683332_01
case_images: A, B: CT images of intrathoracic lymph node station 7 (subcarinal, 5.1 mm) and 4R (right lower paratracheal, 4.6 mm), respectively. C, D: PET images of intrathoracic lymph node station 7 (subcarinal, blue arrow) and 4R (right lower paratracheal, white arrow) without significant avidity.
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case_images: The station 7 lymph node measured 5.1 mm, and the station 4R lymph node measured 4.6 mm on chest CT images (Fig. 1A and B). Whole body PET did not show any avidity anywhere else including intrathoracic lymph nodes (Fig. 1C and D).
case_images: Endobronchial ultrasound images of intrathoracic lymph node station 7 (subcarinal, 5.6 mm) and 4R (right lower paratracheal, 5.5 mm).
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case_images: A few small lymph nodes were identified under EBUS evaluation which showed 5.6mm station 7 lymph node and 5.5 mm station 4R lymph node that were biopsied (Fig. 2).
case_images: Non-necrotizing granuloma composed of epithelioid histiocytes obtained from Endobronchial ultrasound guided biopsies. (Diff-Quik stained smear at 20x and pap-stained smear at 20x, respectively).
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case_images: Biopsies from both sites showed non-necrotizing granuloma confirming diagnosis of sarcoidosis (Fig. 3).