Gupta Barkha, Jain Shyama
Department of Pathology, Maulana Azad Medical College, New Delhi, India.
Trop Parasitol. 2018 Jan-Jun;8(1):53-55. doi: 10.4103/tp.TP_33_17. Epub 2018 May 28.
(EV), an intestinal nematode, causes lesions at ectopic sites also. Although lesions are fully curable with antihelminthic drugs, patients may require surgical intervention in clinically unsuspected cases to arrive at correct diagnosis and appropriate treatment. Accurate diagnosis of these lesions on fine needle aspiration cytology (FNAC) has an advantage of avoiding unwanted surgery. To the best of our literature search, there are few case reports of EV diagnosed on cytology, but none of them describes the various stages of development of eggs and hatching of larvae. Dealing cytopathologist should be cognizant of them as parasite can be present in any of these forms/stages. Recently, we came across an interesting case of young boy who presented with perineal nodule and on FNAC from the lesion showed EV larvae and its eggs in various stages of hatching and development. The patient responded to antihelminthic treatment (AHT). Morphological clues with a review of cytological literature are discussed.
棘颚口线虫（EV）是一种肠道线虫，也会在异位部位引发病变。尽管使用抗蠕虫药物可使病变完全治愈，但在临床未怀疑的病例中，患者可能需要手术干预才能做出正确诊断并进行适当治疗。通过细针穿刺细胞学检查（FNAC）对这些病变进行准确诊断，具有避免不必要手术的优势。据我们全面的文献检索，很少有关于通过细胞学诊断棘颚口线虫的病例报告，而且其中没有一篇描述虫卵发育的各个阶段以及幼虫孵化的情况。处理细胞病理学的医生应该了解这些情况，因为寄生虫可能以任何这些形式/阶段存在。最近，我们遇到了一个有趣的病例，一名年轻男孩出现会阴部结节，对该病变进行细针穿刺细胞学检查显示有处于孵化和发育各个阶段的棘颚口线虫幼虫及其虫卵。该患者对抗蠕虫治疗（AHT）有反应。本文讨论了相关形态学线索并回顾了细胞学文献。
