Two Cases of Human Infestation by Larvae of<i>Linguatula serrata</i>

Symmers, W. St. C.; Valteris, K.

doi:10.1136/jcp.3.3.212

Cited by 21 publications

(22 citation statements)

References 4 publications

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“…Hence, we consider that the presence of these relics might be more prolonged than the other two. Nevertheless, in the cases reported by Mendeloff (1965) and in Case 2 reported by St Symmers and Valteris (1950) no circumoral hook was found, but only the spines; in the case reported by Baird et al. (1988) both the sclerotized openings and the cuticular spines were found, but not the circumoral hooks.…”

Section: Discussionmentioning

confidence: 86%

“…The presence or absence of cuticular spines is one of the main differential characteristics between the nymphs of L. serrata and A. armillatus (St Symmers & Valteris 1950; Tobie et al . 1957; Baird et al .…”

Section: Discussionmentioning

confidence: 99%

“…These peritoneal or pleural lesions, as a rule, are localized superficially either under the serosa of the intestinal wall, or under the capsules of liver and spleen (Faust 1927; Fischer 1929; St Symmers & Valteris 1950; Meyers et al . 1976; Gardiner et al .…”

Section: Discussionmentioning

confidence: 99%

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Pathological differentiation of suspected cases of pentastomiasis in China

Qiu

Rong

2002

Tropical Med Int Health

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SummaryWe report nine cases of suspected pentastomiasis from China, and propose that diagnosis of this rare parasitic disease should be made aetio-pathologically, subaetio-pathologically, and presumptively. In none of our cases' lesions we could ®nd either a whole or part of an embedded nymph; hence, no aetiopathologic diagnosis of pentastomid infection was established. In three cases, subaetio-pathologic diagnoses of pentastomiasis were made upon the discovery of a peculiar set of relics from lesions, namely two pairs of circumoral hooks of pentastomid from lesions. In one of these three cases, an extra scissorslike image indicating a longitudinal section of a hook of the embedded pentastomid nymph, probably Linguatula serrata, was found. In the other six cases, none of the relics of the aetiological agents were found, and our diagnoses were made presumptively by a series of relatively speci®c pathologic features, i.e. pearly lesions over the peritoneal surface of the abdominal cavity under the serosa of the intestinal wall or under the capsules of liver and spleen. They tend to be uniquely protuberant, sometimes linked by a short thin stalk to the surface. The hyalinization and calci®cation of these centrally caseated granulomatous nodules tend to be concentric and targetoid in appearance. Tuberculosis, the most easily confused condition, was easily ruled out pathohistologically. We believe that there is a need for presumptive pathologic diagnosis of human pentastomid infection not only in China, but worldwide.keywords aetio-pathologic diagnosis of pentastomiasis, pathologic diagnosis of pentastomiasis, pentastomiasis, pentastomid myocarditis, presumptive pathologic diagnosis of pentastomiasis, subaetio-pathologic diagnosis of pentastomiasis correspondence Dr K. C.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

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Pathological differentiation of suspected cases of pentastomiasis in China

Qiu

Rong

2002

Tropical Med Int Health

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“…Linguatula serrata (also called Pentastomum denticulatum), is a cosmopolitan zoonotic parasite owing its name to its resemblance to a vertebrate tongue (Symmers & Valteris, 1950;Charles & Hendrix, 1998). L. serrata parasites play an important role in veterinary and human medicine (Schmidt & Roberts, 1981).…”

Section: Introductionmentioning

confidence: 99%

Incidence of Linguatula serrata nymphs and pathological lesions of mesenteric lymph nodes in cattle from Urmia, Iran

Tavassoli¹,

Hobbenaghi²,

Kargozari³

et al. 2018

BJVM

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SummaryTavassoli, M., R. Hobbenaghi, A. Kargozari & H. Rezaei, 2018. Incidence of Linguatula serrata nymphs and pathological lesions of mesenteric lymph nodes in cattle from Urmia, Iran. Bulg. J. Vet. Med., 21, No 2,[206][207][208][209][210][211] This study was aimed to determine the infection rates of mesenteric lymph nodes (MLNs) with Linguatula serrata nymphs and their pathological lesions. From November 2012 to June 2013, the MLNs of 104 cattle were randomly sampled in Urmia slaughterhouse, northwestern Iran. They were examined macroscopically and histopathologically. The infected and non-infected lymph nodes were processed for histopathology. They were examined under light microscope and observations were recorded. The results indicated that out of 104 sampled cattle, 63 (60.57%) were infected. Macroscopic examination revealed that the infected lymph nodes were swollen and dark, with rubbery consistency, some with subcapsular haemorrhages on cutting. The mean number of counted lymph node follicles in the nodes from healthy cattle at random microscopic levels was 18±2.8 (range 15-23), compared to 48.9±3.7 (range 44-57) in the infected nodes. Because L. serrata is a zoonotic parasite, preventive measures should be adopted to break the parasite's cycle and minimise the risk of infection in both humans and other animals.

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“…While subsequently becoming rarer in Europe (e.g. Symmers & Valteris 1950;Drury 1962), there is a substantial modern literature about infection in the Middle East, Africa and Asia in particular. Parasitism by pentastomids may be locally more common than is widely appreciated.…”

Section: Human Infectionmentioning

confidence: 99%