Microscopically, tumor showed an intramucosal nodule composed of sheets of clear cells with arborizing
capillary vascular network and features consistent with clear cell RCC.
Microscopically, Peutz-Jeghers polyps have a "Christmas tree" appearance at low power, with prominent arborizing
smooth muscle (Figure 2).
Microscopically, they are characterized by very tall and complex arborizing
papillae (93) (Figure 9).
Several histologic patterns are recognized, but the classic pattern is typified by nests and cords of cells separated by fine, arborizing
fibrovascular septa (so-called chicken-wire pattern), and collagenous material intermingled among tumor cells.
The hyphae have a random, haphazard pattern of branching rather than the progressive, arborizing
pattern of the branching characteristics of Aspergillus infections.
The granules were approximately 200 to 300 [micro] m in diameter They were positively stained with Gram and Gomori methenamine-silver stain, showing rodlike structure with arborizing
growth pattern, which was consistent with features of P acnes (Figure 3, B).