Concurrent primary and secondary myiasis on basal cell carcinoma

Abstract

Myiasis is a disease caused by infestation of fly larvae in human and other vertebrate tissues. It is a skin condition common in tropical and subtropical countries and its predisposing factors are: chronic diseases, immunodeficiency, poor hygiene, senility, psychiatric disorders, skin cancers and ulcerated mucosae. We report the case of a healthy patient who after traumatic injury of a preexisting lesion showed a tumor on the dorsal region parasitized by fly larvae. The histopathological examination performed for the diagnosis of skin neoplasm surprisingly revealed the presence of a partially degenerated larva with characteristics of Dermatobia hominis, suggesting an association of primary and secondary myiasis on basal cell carcinoma. Keywords: Carcinoma, basal cell; Myiasis; Skin neoplasms Resumo: A miíase é uma doença causada por infestação de larvas de moscas nos tecidos humanos ou de outros animais vertebrados. É dermatose comum em países tropicais e subtropicais e tem como fatores predisponentes: doenças crônicas, imunodeficiência, má higiene, senilidade, doenças psiquiá-tricas, cânceres cutâneos e de mucosas ulcerados. Relata-se caso de paciente hígido que após trauma sobre lesão pré-existente, apresentou tumoração na região dorsal parasitada por larvas de moscas. O exame histopatológico realizado para o diagnóstico da neoplasia, de modo surpreendente, evidenciou a presença de uma larva parcialmente degenerada com características de Dermatobia hominis, sugerindo associação de miíase primária e secundária em carcinoma basocelular.

Urogenital myiasis caused by Psychoda albipennis in a child

“…Urogenital myiasis is also facultative. In the literature, cases of urogenital myiasis caused by Sarcophaga spp., Megaselia scalaris, Thyrsocnema incisilobata, Lucilia sericata, Eristalis tenax, Dermatobia hominis, Chrysomya bezziana, Fannia canilicularis and Psychoda albipennis (similar to our case) have been reported (3,(6)(7)(8)(9). Psychoda albipennis which is responsible for most of the cases of myiasis reported from Turkey is a species which can be observed in Europe with a mild climate and which is known to be common in different provinces of Turkey including mainly Ankara, Edirne, Tekirdağ, İstanbul and Bursa (10).…”

Myiasis on a Giant Squamous Cell Carcinoma of the Scalp: A Case Report and Review of Relevant Literature

“…Wounds attributed to malignant conditions, usually BCC and SCC, have been found to be associated with myiasis [ 13 ]. Despite malignant wounds being known to be a predisposing factor for myiasis, myiasis is largely underreported [ 16 ]. Although a number of larvae species are found to be associated with myiasis, malignant wound myiasis is almost exclusively the result of infestation of larvae from Calliphorida and Sarcophagidae.…”

“…The larvae in superficial wound myiasis can be removed with forceps. These larvae which are photophobic burrow deep into the tissues [ 16 ]. Localized asphyxia induced by various methods of wound occlusion will force these larvae to move out [ 16 ].…”

Myiasis Associated with Oral Squamous Cell Carcinoma - A Literature Review

“…The association of myiasis with oral malignancy can be attributed to the ulcerated and necrotic lesions exposed to the environment resulting from advanced and neglected cancerous lesions (a very common in developing countries). This kind of tissue is attractive to different species of flies, which may deposit their eggs in these medium, especially in the spring and summer months (Sesterhenn et al, 2009;Raposo et al, 2012;Wollina et al, 2014;Biradar et al, 2015). Since proper oral hygiene and hygiene of the surrounding is not maintained by the oral cancer patients as well as the care givers, and other predisposing factors such as the advancing age, alcoholism, diabetes and other systemic conditions exist, the risk for oral Myiasis increases (Biradar et al, 2015).…”