Drainage or Packing of the Sella? Transsphenoidal Surgery for Primary Pituitary Abscess: Report of Two Cases

Figure 2

(a) Preoperative coronal contrast-enhanced T1-weighted MRI demonstrating a ring-enhanced mass in the sella. (b) A photomicrograph of aspiration cytology of the pus obtained during the surgery in case 2, demonstrating a cluster of neutrophils: Papanicolaou stain, scale bar; 100 $\mu$m. (c) A photomicrograph of a histological cross section from the capsule of the abscess. The capsule of the abscess was the collagen-rich layer (parenthesis). Ciliated columnar epithelium indicating Rathke cleft cyst was not present in any specimens obtained during surgery: H and E staining, scale bar; 200 $\mu$m.

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