Tongue Worm (<i>Linguatula serrata</i>) Infestation in a Patient with Acute Leukemia

Tobie, John E.; Edgcomb, John H.; Freireich, Emil J.

doi:10.1093/ajcp/28.6.628

Cited by 9 publications

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“…In subaetio‐pathologic diagnosis the dislocated and calcified cuticular spines, sclerotized openings and circumoral hooks are considered to be the three pathognomonic hallmarks of this infection (Tobie et al . 1957; Mendeloff 1965; Chitwood & Lichtenfels 1972; Baird et al .…”

Section: Discussionmentioning

confidence: 99%

“…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%

“…In subaetio-pathologic diagnosis the dislocated and calci-®ed cuticular spines, sclerotized openings and circumoral hooks are considered to be the three pathognomonic hallmarks of this infection (Tobie et al 1957;Mendeloff 1965;Chitwood & Lichtenfels 1972;Baird et al 1988;Guardia et al 1991). Among them the opportunity of discovering cuticular spines in the histological sections ought to be greater than the latter because the former two are present all over the body of the nymph while the latter is located only circumorally.…”

Section: Pathognomonic Hallmarks Of Subaetio-pathologic Diagnosismentioning

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: 99%

Section: Discussionmentioning

confidence: 99%

Section: Pathognomonic Hallmarks Of Subaetio-pathologic Diagnosismentioning

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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“…2,24 Infection with L. serrata has been reported in several countries in Europe, the Middle East and the Americas, in Canada, the United States, Panama, Costa Rica, Mexico, Colombia, Brazil, and Chile. [5][6][7][8][9][10][11][12][13][14]20,25 In most cases, the parasites were detected at surgery or at autopsy, mainly in the liver, lungs, and lymph nodes. The other species reported to infect humans are A. moniliformis, A. grandis, Leiperia cincinnalis, and Raillietiella hemidactyli.…”

Section: Discussionmentioning

confidence: 99%

“…2,4 When the embryo reaches the intestine, it transforms into a first larva that crosses the intestinal wall and migrates to different organs such as liver, lungs, mesenteric lymph nodes, and less frequently, brain, intestine, and the prostate gland. 2,[6][7][8][9][10][11][12][13][14] At these sites the larvae become encysted and undergo several changes until they transform into third-instar larvae or nymphs, where they can survive for one or more years. When they die, they are absorbed or may calcify.…”

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confidence: 99%

Ocular linguatuliasis in Ecuador: case report and morphometric study of the larva of Linguatula serrata.

Lazo¹,

Hidalgo²,

Lazo³

et al. 1999

The American Journal of Tropical Medicine and Hygiene

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Abstract. Linguatula serrata is a pentastomid, a cosmopolitan parasite belonging to the Phylum Pentastomida. Humans may act as an intermediate or accidental definitive host of this parasite, manifesting the nasopharyngeal or visceral form, with the latter having been described more frequently. The occurrence of ocular linguatuliasis is extremely rare, but it has been reported in the United States and Israel. The objective of the present paper was to report the first case of ocular linguatuliasis in Ecuador and to extend the morphologic study of L. serrata by morphometric analysis. The patient studied was a 34-year old woman from Guayaquil, Ecuador who complained of ocular pain with conjunctivitis and visual difficulties of two-months duration. Biomicroscopic examination revealed a mobile body in the anterior chamber of the eye. The mobile body was surgically removed. The specimen was fixed in alcohol, cleared using the technique of Loos, stained with acetic carmine, and mounted on balsam between a slide and a coverslip. It was observed with stereoscopic and common light microscopes in combination with an automatic system for image analysis and processing. The morphologic and morphometric characteristics corresponded to the third-instar larval form of L. serrata. To our knowledge, ocular linguatuliasis has not been previously described in South America, with this being the first report for Ecuador and South America. The present study shows that computer morphometry can adequately contribute both to the morphologic study and to the systematic classification of Pentastomids, and L. serrata in particular.

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Diagnosis of Pentastome Infections and the Need for Increased Awareness Among Medical Practitioners and Diagnosticians in the Developed World

Barton,

Shamsi

2024

Curr Clin Micro Rpt

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Purpose of Review The patterns of movement of people, and animals, are changing due to climate change, immigration and ongoing refugee crises. Subsequently, many parasitic diseases, including pentastomiasis, are also changing their patterns of distribution. This review is aimed at raising awareness among medical practitioners and diagnosticians, especially in non-endemic areas for pentastomiasis, the disease, and highlighting the issues with the identification of pentastome infections in humans. Recent Findings Pentastome infections in humans can be either visceral or nasopharyngeal in location. Visceral pentastomiasis is generally asymptomatic and is usually only discovered incidentally during examination for other issues or at autopsy. Nasopharyngeal pentastomiasis presents as an acute infection, generally following ingestion of raw or undercooked offal. Identification of the causative agent/s of pentastomiasis is based on general morphological features, determined through histology or radiology, with molecular confirmation of species rare. Summary Although specific identity of the pentastome infection is probably not required from a medical viewpoint with regard to treatment of the infection, it is needed to improve our understanding of the epidemiology of infections. Additionally, with the increased movements of humans, and other animals, and their associated parasitic diseases, these parasites will start to appear in non-endemic areas. Medical practitioners and diagnosticians, as well as veterinarians, need to be aware of these parasites to ensure an accurate identification of the disease.

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Tongue Worm (Linguatula serrata) Infestation in a Patient with Acute Leukemia

Cited by 9 publications

References 0 publications

Pathological differentiation of suspected cases of pentastomiasis in China

Pathological differentiation of suspected cases of pentastomiasis in China

Ocular linguatuliasis in Ecuador: case report and morphometric study of the larva of Linguatula serrata.

Diagnosis of Pentastome Infections and the Need for Increased Awareness Among Medical Practitioners and Diagnosticians in the Developed World

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