1.                   Introduction
The bronchopulmonary lophomoniasis is a condition caused by eating or accidentally suck cysts or trophozoites of protozoan intestinal anaerobic multiflagelado, Lophomonas blattarum (Parabasalid: Hypermastigia, Cristomonadida, Lophomonadidae). This parasite has been characterized as an endocommensal in the gut of some arthropods, like termites and cockroaches (Dyctioptera: Blattoidea), which pollute its path, food, dust and clothes with their secretions and feces [1]. Cockroaches (Figure 1).

Are strong perfectly recognized pests closed, dark places, which abound at the beginning of hot weather and become visible at night when leaving their natural habitat (sewers and drains) to look for food in the periphery and / or inside of the houses room [2]. They are usually carriers of microorganisms (fungi and intestinal parasites) and have been seen mainly in kindergartens, schools or hospitals. To date have identified several groups of intestinal parasites carried by your digestive tract, some health interest as Blastocistis spp and others own the same vector (nematode Thelastoma spp), and protozoans poliflagelados as Lophomonas blattarum [3].

Lophomonas blattarum, main vector protozoan parasite commensal intestinal tract normally located on arthropod. Photo. Villagrán Herrera 2017.

Research conducted in dissected, large and small intestines of 110 copies of American Periplaneta (cockroach pipe) in the city of Wuhan showed in preparations stained with Giemsa and views 1000X, ovals, boules, 20 to 40 microns, with some lock flagella extended down the central axis of the parasite and one end trumpet shaped enveloping the sole core shown. Also, it showed a further small axostilo terminal to multiflagelar part. Based on the above morphological characteristics, the parasite was identified as L. blattarum. Of the 110 cockroaches, 44 were positive for Lophomonas blattarum (44%) [4]. Lophomonas gender, since 1990, has been considered among the protozoa that cause damage to the respiratory tract, especially in immunocompromised individuals (HIV / AIDS, with neoplasias, use of corticosteroids and transplant patients) and in adult and pediatric asthmatic individuals [5-8]. Signs and symptoms of infection are similar to Lophomonas bronchitis or pneumonia and bronchopulmonary pathologies of various etiologies, so it is difficult to correct diagnosis. This forces us to properly address the microbiological study of sputum samples, brushings, biopsy or washed broncho-alveolar, either fresh or stained, especially when observing multiflageladas forms preparations, because if you do not have enough experience can be confused trophozoites of Lophomonas blattarum with fragments of ciliated epithelial cells (ciliocitoforia) of the bronchi [9,10].

It is important to note that conventional techniques such as Gram stain, Giemsa, Papanicolao not allow adequate visualization of multiflagelado. Thus, it is necessary that suspicion, first a wet mount is made with saline in all respiratory tract samples reach the laboratory for parasitological diagnosis, and subsequently extended perfectly smear stained with special stains such as Masson [11]. The most important species are clinically Lophomonas blattarum and Lophomonas striata. L. striata species was first identified in the gut of the cockroach Blatta orientalis by Stein in 1860 [1]. L. blattarum structure was identified in the light microscope in 1911 and in 1990 with an electron microscope and scanning.

The shape of trophozoite Lophomonas usually round, oval or pear-shaped, a size range between 15 to 50 microns in diameter, with a tuft of flagella forming a bunch located at the front end, being larger, those found far apical cleft. Phagocytic vacuoles containing in their cytoplasm, with rhythmical movements outward directed to the apical end in order to eliminate or excretions trap foreign materials [1].

2.       Case Presentation

Male of 50 years old, doctor native of Pachuca Hidalgo, who lives in the municipality of Cadereyta for 18 years. He denies travel abroad without physical activity, indicates proper grooming. Refers 9 years ago diagnosis of non-Hodgkin lymphoma, treated with radiotherapy and chemotherapy. For post-treatment edema, it was performed thoracentesis and pericardiocentesis and gastrostomy, which he held for one year. 6 months ago, presented respiratory symptoms, characterized by fever, malaise, coughing, mild respiratory failure data, it is given antibiotic therapy is administered salbutamol and after 15 days this remission. 1 month ago presents respiratory symptoms with the same characteristics, refers to chest radiography was performed with data unspecified pneumonia. It presents 6 days ago fatigue, weakness, hyporexia, malaise, fever of 38.5°, self-medicate levofloxacin 750 mg every 12 hours, ceftriaxone 1 g every 24 hours, paracetamol and metamizol 500 mg orally three days later added cough, sputum streaked with blood, then it becomes a uniform red color, likewise the cough persists and increases the amount of phlegm. It has mild dyspnea, without predominance of schedule, salbutamol self-medicates, showing improvement with the drug application.

Currently the fever persists, malaise and mild headache concerns. You are prompted for newly issued Spitting samples and will conduct studies on fresh saline and various smears, which are stained with hematoxylin and eosin, Pap smear, PAS-Alcian Blue-and Giemsa. The study reveals fresh trophozoites and cysts of a multiflagellated protozoan identified as Lophomonas blattarum (Figures 2a and 2b).

In smears before dye them lot of polymorphonuclear leukocytes are observed coincident with an acute inflammatory process. (Figure 3).

Following identification multiflagellated protozoan is started treatment with Metronidazole 500 mg every 8 hours orally for 7 days, improving symptoms, decreasing dyspnea, following nonproductive cough.

3.       Discussion

In the cases reported in Peru, China and Spain (Table 1).

where found this protozoan in sputum samples must be added, one reported case of sinusitis in Iran [12] whose common denominator, deficiencies in the immune system, the It makes extremely sensitive to any milder infection by it. It also indicates a possible airborne transmission, influenced by a moist environment through waste and environmental dust and aspiration, trophozoites or cysts of the protozoan stay in the lung epithelium develop infection with similar manifestations to any pathology pulmonary bacterial, fungal and even parasitic, further hindering its accurate diagnosis.

Our patient developed respiratory symptoms pointing possible miliary tuberculosis or pathology of acute airways, since in the expectorant product threads blood were observed in some of the emissions, so without wet study with saline, differential diagnosis not It would have been possible to achieve. The immunocompromised patient was a crucial and decisive factor for infection to develop, like self-medication and the lack of an accurate diagnosis were important factors for complete recovery is delayed.

4.       Conclusions

This particular case was the first diagnosed in Mexico, and illustrates casual L. blattarum infection, a rare opportunistic pathogen, probably acquired by the patient airway developing lung infection, due to its immuno-compromised immune status. It is essential that physicians consider Lophomonas blattarum in their differential clinical diagnosis. Since some dust mites are vectors similar flagellates, whose respiratory allergy manifestations are presented in a similar manner and lack of an accurate diagnosis, chronic allergies become unresponsive to treatment administered.

5.       Conflict of interests

The authors declare that no conflict of interest in connection with the publication of this case.

6.       Acknowledgments

It is important to mention the support of the H. T. Evelyn Hernandez Flores, for his collaboration in staining smears of the sputum sample.

Figure 1. intradomiciliary Cockroach (Periplaneta americana).

Figures 2a and 2b. wet mount with saline, which are observed trophozoites and cysts Lophomonas blattarum. X400. Photos: Villagrán Herrera 2017.

Figure 3: Mounting wet with saline. multiflagellated trofozoitos (1) and cysts (2) in a sample of undyed morning expectoration observed. the vacuole and the many scourges in its narrowest seen in some ways. These features are supported by Lophomonas blattarum. erythrocytes (3) show a process of bleeding throat appreciated. X400. Photo: Villagrán Herrera 2017.

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