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which developed into an ulcerated nodule followed by the appearance of another ulcerated nodule nearby after a few days &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; He denied local trauma or systemic symptoms&#46; On dermatological examination&#44; there was an indurated plaque with 2 well-defined lesions &#40;measuring 3<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>2<span class="elsevierStyleHsp" style=""></span>cm and 2<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>1&#46;5<span class="elsevierStyleHsp" style=""></span>cm&#41;&#44; with a fibrin base and brownish edges&#44; painful on palpation&#46; The inguinal lymph nodes were palpable bilaterally&#46; Ultrasound examination showed a mass immediately below the lesion&#44; with lobulated contours and low vascular flow&#44; extending to the deep adipose plane&#46; The lymph nodes were enlarged&#44; showing regular contours and loss of the usual architecture&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">A wedge biopsy of the larger lesion was performed&#44; which showed a granulomatous inflammatory process with areas of caseous necrosis&#44; lymphohistiocytic inflammatory infiltrate&#44; and Langerhans-type giant cells&#44; favoring the diagnosis of tuberculosis&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">The fungal screening tests &#40;Grocott-Gomori and periodic acid Schiff stains&#41; and search for acid-alcohol-resistant bacilli by the Ziehl-Neelsen staining were negative&#46; A direct fresh examination of lesion scrapings showed no amastigote forms of Leishmaniasis and the chest X-ray was normal&#44; with a 19-mm PPD &#40;purified protein derivative&#41; test &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46; It was not possible to perform the serum PCR exam due to its unavailability at the time&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0030" class="elsevierStylePara elsevierViewall">After a trial treatment for tuberculosis &#40;Rifampicin&#44; Isoniazid&#44; Pyrazinamide for two months&#59; Rifampicin and Isoniazid for four months&#41; was initiated&#44; the patient showed significant lesion improvement&#44; with local healing &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Fig&#46; 3</a>&#41;&#46;</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">Cutaneous tuberculosis chancre constitutes a rare form of CTB and is equivalent to the primary pulmonary complex&#46; Also called primary inoculation chancre&#44; it develops in people not previously sensitized&#44; occurring more frequently in children&#46; It occurs by direct inoculation into the skin after local&#44; often unnoticed&#44; trauma&#44; with subsequent appearance of an ulcerated inflammatory papule&#44; plaque or nodule&#44; and regional lymphadenopathy&#46;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> Histopathology varies according to the time lapse after inoculation&#58; initially&#44; there is a nonspecific acute inflammatory infiltrate&#46; Subsequently&#44; granuloma formation and a decrease in the number of bacilli occur&#46; In most samples&#44; the bacilli will not be observed even with special staining&#44; which makes other complementary tests useful&#44; such as PPD and&#47;or serum PCR&#44; clinical follow-up&#44; and&#44; often&#44; therapeutic testing&#46; When there is clinical suspicion&#44; a histopathological examination with suggestive features&#44; plus a strongly reactive positive PPD&#44; the diagnosis should be suspected&#46; Treatment is similar to that of pulmonary forms of the disease&#46;<a class="elsevierStyleCrossRefs" href="#bib0020"><span class="elsevierStyleSup">4&#44;5</span></a></p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Financial support</span><p id="par0040" class="elsevierStylePara elsevierViewall">None declared&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Authors&#8217; contributions</span><p id="par0045" class="elsevierStylePara elsevierViewall">Gabriela Roncada Haddad&#58; Drafting and editing of the manuscript&#59; effective participation in research orientation&#59; intellectual participation in the propaedeutic and&#47;or therapeutic conduct of the studied cases&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">L&#237;via Caramaschi Flor&#234;ncio&#58; Drafting and editing of the manuscript&#59; intellectual participation in the propaedeutic and&#47;or therapeutic conduct of the studied cases&#46;</p><p id="par0055" class="elsevierStylePara elsevierViewall">Vidal Haddad Junior&#58; Drafting and editing of the manuscript&#59; effective participation in research orientation&#59; intellectual participation in the propaedeutic and&#47;or therapeutic conduct of the studied cases&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Conflicts of interest</span><p id="par0060" class="elsevierStylePara elsevierViewall">None declared&#46;</p></span></span>"
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Journal Information
Vol. 97. Issue 5.
Pages 685-687 (1 September 2022)
Visits
4955
Vol. 97. Issue 5.
Pages 685-687 (1 September 2022)
Case Letter
Open Access
Cutaneous tuberculosis chancre: case description in a child
Visits
4955
Gabriela Roncada Haddad
Corresponding author
gabriela.haddad@yahoo.com

Corresponding author.
, Lívia Caramaschi Florêncio, Vidal Haddad Junior
Department of Infectology, Dermatology, Diagnostic Imaging and Radiotherapy, Faculty of Medicine, Universidade Estadual Paulista, Botucatu, SP, Brazil
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Dear Editor,

Cutaneous tuberculosis (CTB) is an infection caused by Mycobacterium tuberculosis, M. bovis or Bacillus Calmette-Guérin (BCG), used in immunizations. Clinical manifestations are variable and depend on several factors, such as the host’s immune status.1,2

The extrapulmonary forms of tuberculosis account for approximately 10% of cases, with 1% to 2% occurring on the skin.3,4 Children have this form of disease more frequently, possibly due to the immaturity of their immune system.

An eight-year-old male patient presented with an erythematous papule on the medial aspect of the right thigh, which developed into an ulcerated nodule followed by the appearance of another ulcerated nodule nearby after a few days (Fig. 1). He denied local trauma or systemic symptoms. On dermatological examination, there was an indurated plaque with 2 well-defined lesions (measuring 3×2cm and 2×1.5cm), with a fibrin base and brownish edges, painful on palpation. The inguinal lymph nodes were palpable bilaterally. Ultrasound examination showed a mass immediately below the lesion, with lobulated contours and low vascular flow, extending to the deep adipose plane. The lymph nodes were enlarged, showing regular contours and loss of the usual architecture.

Figure 1.

Ulcerated nodules on the medial aspect of the right thigh.

(0.23MB).

A wedge biopsy of the larger lesion was performed, which showed a granulomatous inflammatory process with areas of caseous necrosis, lymphohistiocytic inflammatory infiltrate, and Langerhans-type giant cells, favoring the diagnosis of tuberculosis.

The fungal screening tests (Grocott-Gomori and periodic acid Schiff stains) and search for acid-alcohol-resistant bacilli by the Ziehl-Neelsen staining were negative. A direct fresh examination of lesion scrapings showed no amastigote forms of Leishmaniasis and the chest X-ray was normal, with a 19-mm PPD (purified protein derivative) test (Fig. 2). It was not possible to perform the serum PCR exam due to its unavailability at the time.

Figure 2.

A strongly reactive 19mm PPD test.

(0.12MB).

After a trial treatment for tuberculosis (Rifampicin, Isoniazid, Pyrazinamide for two months; Rifampicin and Isoniazid for four months) was initiated, the patient showed significant lesion improvement, with local healing (Fig. 3).

Figure 3.

Evolution with significant lesion improvement, after a trial treatment for tuberculosis.

(0.16MB).

Cutaneous tuberculosis chancre constitutes a rare form of CTB and is equivalent to the primary pulmonary complex. Also called primary inoculation chancre, it develops in people not previously sensitized, occurring more frequently in children. It occurs by direct inoculation into the skin after local, often unnoticed, trauma, with subsequent appearance of an ulcerated inflammatory papule, plaque or nodule, and regional lymphadenopathy.1 Histopathology varies according to the time lapse after inoculation: initially, there is a nonspecific acute inflammatory infiltrate. Subsequently, granuloma formation and a decrease in the number of bacilli occur. In most samples, the bacilli will not be observed even with special staining, which makes other complementary tests useful, such as PPD and/or serum PCR, clinical follow-up, and, often, therapeutic testing. When there is clinical suspicion, a histopathological examination with suggestive features, plus a strongly reactive positive PPD, the diagnosis should be suspected. Treatment is similar to that of pulmonary forms of the disease.4,5

Financial support

None declared.

Authors’ contributions

Gabriela Roncada Haddad: Drafting and editing of the manuscript; effective participation in research orientation; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases.

Lívia Caramaschi Florêncio: Drafting and editing of the manuscript; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases.

Vidal Haddad Junior: Drafting and editing of the manuscript; effective participation in research orientation; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases.

Conflicts of interest

None declared.

References
[1]
J.B. Santos, A.R. Figueiredo, C.E. Ferraz, M.H. Oliveira, P.G. Silva, V.L.S. Medeiros.
Tuberculose cutânea: aspectos epidemiológicos, etiopatogênicos e clínicos ‒ Parte I.
An Bras Dermatol, 89 (2014), pp. 220-230
[2]
Dias MFRG, F. Bernardes Filho, M.V. Quaresma, L.V. Nascimento, J.A.C. Nery, D.R. Azulay.
Atualização em tuberculose cutânea.
An Bras Dermatol, 89 (2014), pp. 926-940
[3]
J. Granado, A. Catarino.
Cutaneous tuberculosis presenting as lupus vulgaris.
Int J Infect Dis, 96 (2020), pp. 139-140
[4]
H. Gunawan, G. Lamsu, P.A. Achdiat, O. Suwarsa, R. Hindritiani.
A rare case of multiple lupus vulgaris in a multifocal tuberculosis pediatric patient.
Int J Mycobacteriol, 8 (2019), pp. 205-207
[5]
Q. Chen, W. Chen, F. Hao.
Cutaneous tuberculosis: A great imitator.
Clin Dermatol, 37 (2019), pp. 192-199

Study conducted at the Department of Infectology, Dermatology, Diagnostic Imaging and Radiotherapy, Faculdade de Medicina, Universidade Estadual Paulista, Botucatu, SP, Brazil.

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