Upon opening the trachea, multiple, yellow to tan, nodular to plaque-like aggregates of thick, caseous
necrotic material were observed adhering to the mucosal surface and filling >50% of the lumen at their respective sites (Fig 6).
Histologically, the granulomas in all tissues examined demonstrated similar histopathologic features, characterized by a central core of caseous
necrosis and surrounded by an unorganized rim of mixed inflammatory cells, including neutrophils, lymphocytes, plasma cells, and epithelioid macrophages.
Histopathological examination revealed caseous
ve granulomatous infection compatible with tuberculosis.
Elevating the cartilage flap over the lesion revealed caseous
grayish-white tissue, which was entirely curetted out, leaving an unfilled crater over which the joint cartilage was simply laid without need for any suture.
Scientists from the Moredun Research Institute presented updates on their research into caseous
lymphadenitis (CLA), ovine pulmonary adenocarcinoma (OPA) and the use of new immunogenetics approaches to improve disease control.
B and C, Original slides were not retained, but representative cytology with modified Giemsa stain shows caseous
debris and granulomas and scattered Langhans giant cells, findings consistent with tuberculosis (original magnifications 310 [B] and 340 [C]).
Mycobacterium tuberculosis was isolated on a culture, and a histopathological examination revealed caseous
necrosis with granuloma formation (Figure 4).
4,5] Renal colic is present in less than 10% of patients and is secondary to the passage of caseous
material, necrotic renal papillary tissue, clots or stones.
However, tuber-culous granulomas are generally confluent, with a caseous
centre and peripheral lymphocytic ring; these features, along with pale serosal tubercles serve as distinguishing diagnostic features of TB.
Renal biopsy was performed, which showed several areas of granulomatous interstitial nephritis with multiple areas of caseous
necrosis (Figure 4).
After adequate local anesthesia was obtained, aggressive palpation was performed to thoroughly extrude the tonsil stones and caseous
material that were present.
Sectioning of the cyst found caseous
material, hair, and partially calcified areas.