Publication date: Available online 24 February 2017
Source:Annales de Dermatologie et de Vénéréologie
Author(s): C. Merklen-Djafri, P. Truntzer, S. Hassler, B. Cribier
IntroductionLa tomographie à émission de positons (TEP) est un examen basé sur la fixation d'un traceur radioactif par des cellules hypermétaboliques. Il est principalement utilisé couplé à la tomodensitométrie (TEP-TDM) dans le bilan d'extension des cancers, du fait d'une grande sensibilité et d'une grande spécificité pour la détection des métastases. Toutefois, des tumeurs bénignes peuvent avoir une hyperfixation inhabituelle, dont des tumeurs cutanées. Nous rapportons un cas très exceptionnel de kératose séborrhéique à l'origine d'une hyperfixation pathologique.ObservationUn patient de 55 ans atteint d'un carcinome épidermoïde de l'œsophage nous a été adressé en raison de la découverte d'un foyer d'hyperfixation en TEP-TDM, correspondant à une lésion cutanée pigmentée. Il n'y avait aucune autre hyperfixation suspecte. Cette lésion a été excisée et l'examen histologique a montré qu'il s'agissait d'une kératose séborrhéique. L'aspect histologique était celui d'une kératose séborrhéique classique, sans activité mitotique remarquable.DiscussionLa TEP-TDM est reconnue comme un examen permettant le diagnostic de malignité. De rares cas d'hyperfixation par des tumeurs cutanées bénignes ont cependant été décrits : histiocytofibromes, pilomatricomes ou condylomes. L'hyperfixation par une kératose séborrhéique n'a été qu'exceptionnellement rapportée.ConclusionCe cas très inhabituel d'hyperfixation d'une kératose séborrhéique en TEP-TDM confirme que l'activité hypermétabolique détectée par cet examen n'est pas synonyme de malignité. Une confrontation avec la clinique et les données histologiques est indispensable. Les raisons de l'activité métabolique accrue au sein de ces tumeurs bénignes ne sont pas connues.BackgroundPositron emission tomography (PET) is an examination based upon the uptake of a radioactive tracer by hypermetabolic cells. It is primarily used in tandem with tomodensitometry (PET-TDM) for cancer staging because of its high sensitivity and specificity for the detection of metastases. However, unusually high uptake may occur with benign tumours, including skin tumours. Herein, we report an extremely rare case of pathological uptake levels resulting from seborrhoeic keratosis.Patients and methodsA 55-year-old male patient with oesophageal squamous-cell carcinoma was referred to us following the discovery of an area of high marker uptake following PET-TDM and corresponding to a pigmented skin lesion. No other areas of suspect high uptake were seen. The lesion was surgically excised and histological examination indicated seborrhoeic keratosis. The histological appearance was that of standard seborrhoeic keratosis without any notable mitotic activity.DiscussionPET-TDM is an examination that enables diagnosis of malignancy. However, rare cases have been described of increased marker uptake by benign cutaneous tumours such as histiocytofibroma, pilomatricoma and condyloma. To date, there have only been only very few cases of increased uptake due to seborrhoeic keratosis.ConclusionThis extremely unusual case of increased glucose uptake in PET-TDM due to seborrhoeic keratosis confirms that the hypermetabolic activity detected by this examination is not necessarily synonymous with malignancy and that confirmation by clinical and histological findings is essential. The reasons for increased metabolic activity within such benign tumours are not known.
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Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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Παρασκευή 24 Φεβρουαρίου 2017
Hyperfixation intense d’une kératose séborrhéique en TEP-TDM
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- Assessing asthma in the otolaryngologist's office.
- Biologics for asthma and allergy.
- Assessing asthma in the otolaryngologist's office.
- Biologics for asthma and allergy.
- Integration of high-risk human papillomavirus into...
- Positron emission tomography-CT prediction of occu...
- Treatment-related determinants of survival in earl...
- Treatment delays in oral cavity squamous cell carc...
- Correlating the depth of invasion at specific anat...
- Integration of high-risk human papillomavirus into...
- Positron emission tomography-CT prediction of occu...
- Treatment-related determinants of survival in earl...
- Treatment delays in oral cavity squamous cell carc...
- Correlating the depth of invasion at specific anat...
- Laryngoscopy during swimming: A novel diagnostic t...
- Laryngoscopy during swimming: A novel diagnostic t...
- Exendin-4 inhibits structural remodeling and impro...
- Gastric bypass in the pig increases GIP levels and...
- Letter From the Guest Editors
- Ghrelin and Cancer Progression
- Autophagy as a potential target for sarcoma treatment
- Cerebrospinal Fluid Fistula for the Craniofacial S...
- Microsurgical Replantation of Total Avulsed Scalp:...
- Early Surgical Correction of the Nasal Deformity i...
- Editorial Lp(a) – the underestimated cardiovascula...
- Orbital apex syndrome as a complication of herpes ...
- Lattice-like paraproteinemic keratopathy (PPK) of ...
- Rare association of congenital penile urethrocutan...
- Hypercalcaemia caused by active pulmonary tubercul...
- Over 10 years MRI observation of a patient with ne...
- Emergency cricothyroidotomy following tracheobronc...
- Subretinal abscess
- Could kinesiology taping help mitigate pain, breat...
- A comprehensive in vitro biological investigation ...
- Self-esteem as an important factor in quality of l...
- Influence of surface roughness on silicone rubber ...
- Self-esteem as an important factor in quality of l...
- Influence of surface roughness on silicone rubber ...
- Longitudinal segmentation of age-related white mat...
- Foreign Body Aspiration in Adults (Two Unusual For...
- Abnormal Auditory Brainstem Response (ABR) Finding...
- Childhood Laryngeal Dystonia Following Bilateral G...
- Two Techniques of Tonsillectomy Performed in Ident...
- Central Myxoma / Myxofibroma of the Jaws: A Clinic...
- Comparison of Fluoroplastic Causse Loop Piston and...
- Opium Addiction and Risk of Laryngeal and Esophage...
- Meatoplasty in Canal wall down Surgery: Our Experi...
- Experimental Visualization of Labyrinthine Structu...
- Emphasis on the early diagnosis of antithyroid dru...
- Generation and Characterization of Inhibitory Anti...
- Monoclonal Antibody TfR Monoclonal Antibody
- Antiglycopeptide Mouse Monoclonal Antibody LpMab-2...
- Monoclonal Antibody 4E3-2F7 Antimouse Dermokine-β/α
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- Channel of viral DNA packaging motor for real time...
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- Summary of mutations underlying autosomal recessiv...
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- Outcome of Large Noninvasive Follicular Thyroid Ne...
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- Induction chemotherapy with cisplatin and ifosfami...
- Epidermal growth factor receptor expression in gas...
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- A cohort study of vulvar cancer over a period of 1...
- The ERK/MAPK pathway is overexpressed and activate...
- Clear Cell Colorectal Carcinoma: time to clarify d...
- Prevalence of adeno-associated virus and human pap...
- Survivin and gynaecological tumours
- Expression of Vav3 protein and its prognostic valu...
- Prognostic factors in MNU and DMBA-induced mammary...
- Histologic factors predicting invasion in patients...
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