Subcutaneous human dirofilariasis

Sukumarakurup, Sreekanth; Payyanadan, Binitha Manikoth; Mariyath, Reena; Nagesh, Minu; Moorkoth, Anitha Puduvail; Devarajan, E

doi:10.4103/0378-6323.148576

Cited by 6 publications

(3 citation statements)

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“…This is especially significant because of the world wide distribution of the nematode and the frequent absence of a history of contact with animals.Though it often resolves spontaneously, surgical removal is recommended for persistent lesions, resulting in an excellent outcome. [5]…”

Section: Discussionmentioning

confidence: 99%

Subcutaneous Human Dirofilariasis A Rare Case Report from Mumbai, Maharashtra

Sarda,

Patil

2023

Ann of Pathol and Lab Med

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Subcutaneous human dirofilariasis is caused by the zoonotic filariae, Dirofilaria repens. The frequency of reports is increasing in literature during the last few years and is considered by some authors as an emerging zoonosis.In India, majority of the cases have been reported from Kerala, case reports from other parts of the country is rare. Here, we report a case to focus attention on this rare cause of a subcutaneous nodule which is often misdiagnosed or overlooked. We report a rare case of subcutaneous Dirofilariasis from Mumbai, Maharashtra. A 15-year-old boy who experienced a cosmetic subcutaneous cheek swelling on the left side of face, since 1.5 years. No pain, no sinus and no discharge. A complete hemogram was done which was normal. No eosinophilia was seen. Since the clinical diagnosis was a soft tissue lesion, a radiograph was not taken. The lesion was excised under local anaesthesia, which revealed a filarial nematode compatible with adult gravid female of the Dirofilaria repens, a zoonotic filariasis that causes subcutaneous dirofilariasis in dogs and cats.

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Section: Discussionmentioning

confidence: 99%

Subcutaneous Human Dirofilariasis A Rare Case Report from Mumbai, Maharashtra

Sarda,

Patil

2023

Ann of Pathol and Lab Med

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“…1 Clinical forms include pulmonary, subcutaneous, and ocular disease. 3 Subcutaneous dirofilariasis presents as an occasionally migratory nodule that may be painful or itchy, distributed on the face (especially periorbital and subconjunctival), chest wall, upper arm, thigh, and male genitalia. [1][2][3] As the adult female worm does not reach maturity in skin, microfilariae usually are not seen in blood.…”

Section: Discussionmentioning

confidence: 99%

“…The dog parasite Dirofilaria repens is the most common agent for human infections acquired accidentally by the bite of mosquitoes of the genera Culex , Aedes , and Anopheles . Clinical forms include pulmonary, subcutaneous, and ocular disease . Subcutaneous dirofilariasis presents as an occasionally migratory nodule that may be painful or itchy, distributed on the face (especially periorbital and subconjunctival), chest wall, upper arm, thigh, and male genitalia .…”

Section: Discussionmentioning

confidence: 99%

Skin-Colored Nodule on the Scalp of a Middle-aged Man

Khullar

Agarwal²,

Chandra³

2020

JAMA Dermatol

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An otherwise healthy man in his 40s presented with a 3-month history of an asymptomatic nodule on his scalp. There were no systemic complaints, history of arthropod bite, immunosuppression, travel abroad, or contact with animals in the recent past. Physical examination revealed a skin-colored, firm, nontender, freely mobile 2 × 1.5-cm nodule with overlying normal skin on the right occipital region of the scalp (Figure , A). There was no lymphadenopathy. No other cutaneous lesions were present.The nodule was completely excised and sent for histopathologic examination, which revealed a nodule in the dermis with an unremarkable epidermis. Cross-sections of parasites were present, surrounded by a fibrous capsule (Figure , B). The parasite showed an outer cuticle, muscle layer underneath, and gravid uterus filled with microfilariae (Figure , C). The cuticle demonstrated a wavy pattern of longitudinal ridges on its outer surface (Figure , D). The fibrous capsule contained mixed inflammatory infiltrate of lymphocytes, eosinophils, histiocytes, and plasma cells. Findings of slitlamp examination and fundoscopy of the eyes were normal. Findings of routine hematologic and biochemical investigations were normal. No microfilaria was seen in peripheral blood. Findings of chest radiography and abdomen ultrasonography were unremarkable.

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