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case_images: PMC10436987_02
case_images: PMC10436987_03
case_images: CT scan at 7 months old: cystic appearance of the right eustachian tube; lack of middle ear aeration on the right side.
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case_images: MRI at 1 year old: Right eustachian tube occupied by a cystic tumor.
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case_images: Subsequent MRI showed the same cystic-like appearance of her right eustachian tube, with a non homogenous content and complete lack of middle ear ventilation (Figure 2).
case_images: PMC10436987_04
case_images: Intraoperative views, showing progressive removal of the tumor of a tumor. We can identify: the malleus (M), stapes head (S), and tumor (T). Later in removal process, hair follicles (H) are clearly visible on the surface of the tumor.
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case_images: Its peripheral dissection and traction allowed eliciting of a hairy, ferm, whitish tumor that could be excised with some difficulty, apparently in a single piece, due to its profound attachments inside the medial part of the Eustachian tube (Figure 3).
case_images: Intraoperative nasopharyngeal endoscopy at the end of the surgical tumor removal.
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case_images: Nasopharyneal endoscopy showed a normal sized residual right eustachian tube orifice (Figure 4).
case_images: Histologic sections of the Eustachian tumor appearance: (a) Fibroadipose tissue covered by squamous epithelium with skin appendages, H&E stain, 100X, (b) A mixture of bone trabeculae, fibrous tissue, sero-mucous glandular acini, ductal structure layered by ciliated columnar respiratory epithelium, H&E stain, 100X, and (c) The tumor surface was covered by skin with skin appendages and hair shafts, Van Gieson stain, 100X.
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