Gross Description -- Retroperitoneal masses


CASE 1: The specimen consisted of a 8.0 cm x 5.0 cm x 3.5 cm ovoid mass covered with delicate, tan-pink fibrous tissue. On sectioning, the mass was composed of purple-red, fleshy, lobulated tumor with central necrosis and hemorrhage (approximately 60% of the mass). The tumor infiltrated surrounding adipose tissue within 0.2 cm of the resection margin.

CASE 2: The "retroperitoneal mass" specimen (Image 1 and Image 2) consisted of a 45.4 gram, 8.0 cm x 5.0 cm x 3.0 cm portion of irregular, lobulated, grey-tan tissue partially encapsulated with a thin fibrous capsule. Delicate fibrous septae separated multiple lobules, some of these lobules were located outside the capsule. Focal hemorrhage and necrosis was identified. The "gastric tumor" mass consisted of a 5.5 cm x 3.0 cm x 1.5 cm wedge resection of stomach distended by a submucosal, 1.8 cm x 1.8 cm x 1.8 cm, spherical, encapsulated nodule. On cut section this nodule showed bulging, tan, slightly trabeculated tissue. The two lymph nodes were 0.5 cm and 0.3 cm in greatest dimension, encased in 2.0 cm x 2.0 cm x 0.4 cm of fibroadipose tissue.




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