PMC9718139_01
Fine-needle aspiration of lymph node showing macrophages containing deeply basophilic, round granules that often coalesce to form variably sized aggregates suggestive of Neorickettsia helminthoeca, Wright-Giemsa. 50x oil objective (A) and (B) 100x oil objective.
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gf01
Representative photomicrographs of the lymph node cytology (Figure 1) are provided. These macrophages had a moderate amount of lightly basophilic cytoplasm that occasionally contained variable numbers of discrete punctate vacuoles or fine magenta granules, and frequently contained deeply basophilic, round granules that often coalesced to form variably sized aggregates (Figure 1).