[A thyroid pathology: The great simulator]. / Une pathologie thyroïdienne : la grande simulatrice.

INTRODUCTION: Tuberculosis remains a major public health problem in developing countries. Thyroid localization is very rare, and often the cause of misdiagnosis. Pathological anatomy plays an important role in the diagnosis of certainty. The authors report a case of primary thyroid tuberculosis in a 22-year-old patient. We highlight the epidemiological particularities of this case, and discuss diagnostic methods and the contribution of pathological anatomy. OBSERVATION: A 22 year-old male patient, with no reported pathological history, was seen in the clinic for the management of an isolated anterior cervical swelling that had been evolving for two months. Clinical examination revealed only a small thyroid nodule, with no inflammatory or vascular features. Biological tests were unremarkable. Ultrasound revealed a 2.4cm hypoechoic, homogeneous, poorly vascularized tissue mass in the left lobe, classified as EU-TIRADS 3. Fine needle aspiration with cytopathological study revealed a necrotizing granulomatous lesion suggestive of tuberculosis. A lobo-isthmectomy was performed, and histopathology revealed thyroid parenchyma destroyed by tubercular granulomas. The postoperative course was straightforward, with an exeat on postoperative day 6. Anti-tuberculosis treatment was instituted for 6 months. Three- and six-month follow-up examinations were unremarkable. The evolution was favorable, with recovery after treatment. CONCLUSION: Primary thyroid tuberculosis is rare. Cytology is important for orientation, and often helps to avoid misdiagnosis. The diagnosis should be considered in the presence of any thyroid mass in a patient from a tuberculosis-endemic region.

[Epidemiological and anatomopathological profile of endometriosis in Dakar: retrospective study over a period of 20 years]. / Aspects épidémiologique et anatomopathologique des endométrioses à Dakar : étude rétrospective sur une période de 20 ans.

INTRODUCTION: Endometriosis is a gynecological pathology defined by the presence and abnormal development of endometrial tissue outside the uterine cavity. Our objective was to draw up an epidemiological profile and to describe the anatomical clinical forms of endometriosis in Dakar. PATIENTS AND METHODS: This is a retrospective study of all cases of external and internal endometriosis diagnosed in an anatomy and pathology laboratory in Dakar over a period of twenty (20) years. The study parameters were collected from anonymous data sheets. Data entry and analysis were performed using version 22 of the EPI INFO and SPSS software. RESULTS: Our study involved 104 female patients. The mean age was 47.3±10.0. Among the patients with an adenomyosis condition, the mean age was 49.8 years. Patients with an external endometriosis condition had a mean age of 37.6 years. The location of the endometriosis was statistically correlated with the age of patients and with parity. Anatomically and pathologically, the surgical specimen 89.4% (n=93) was the main type of sampling that was found. The uterine body was the main location of the pathology, with 78.9% (n=82), followed by the umbilical location with 9.6% (n=10). Leiomyomas 44.07% (n=26) were the main associated lesions. CONCLUSION: Endometriosis is a gynecological pathology that is unfortunately not well known, and which is under diagnosed in Senegal.

Lithopedion as a factor in post-traumatic intestinal perforation.

Lithopedion is a rare condition secondary to retention and calcification of an unrecognized intra-abdominal (usually ectopic) pregnancy after a fetal death, which occurred after three months of gestation. It accounts for 1.5%-2% of cases of ectopic pregnancy. We report the case of a 72-year-old nulligravida woman who died about 72 h after being kicked in the abdomen during a fight. At autopsy, an intra-abdominal calcified fetus, acute generalized peritonitis, and ileal perforation were observed. The estimated gestational age of the fetus was 37 weeks (based on femur length) and the lithopedion had a weight of 750 g and a size of 15 × 12 × 9 cm. The age of menopause and the duration of retention are not known. This is the first case of this entity identified in Senegal.

[Multivisceral pancratic cytosteatonecrosis found at autopsy]. / Cytostéatonécrose multiviscérale d'origine pancréatique, de découverte autopsique.

INTRODUCTION: Pancreatic cytosteatonecrosis is a rare condition associated with various pancreatic diseases such as acute or chronic pancreatitis and pancreatic cancer. We report a case of pancreatic cytosteatonecrosis discovered at autopsy. OBSERVATION: This is a young man, 29 years old, alcoholic, non-smoker, who consulted for abdominal pain, vomiting, fever (38°). Renal ultrasound showed signs of acute renal failure, with severe anemia at 6g/dl and hyperleukocytosis. Lipasemia has not been tested. The treatment combined hemodialysis, punctures of effusions, analgesics, antibiotics and diuretics. The death occurred after 45 days of hospitalization. The medical autopsy requested showed an abdominal cavity dotted with multiple whitish, chalky, "candle-stained" nodules scattered throughout the peritoneum. Microscopy confirmed the diagnosis by showing large areas of adiponecrosis associated with polymorphic, diffuse leukocyte infiltrates and calcifications. CONCLUSION: This observation is original by the discovery at autopsy of one of the major complications of acute pancreatitis. This situation is dramatic because the death could be avoided. You have to think about it in order to ask for the dosage of lipasemia. The "digestion" of pancreatic enzymes are responsible for intra-pancreatic and peri-pancreatic complications. Chronic alcoholism and cholelithiasis are the main risk factors.

Primary squamous cell carcinoma of the kidney in southern Senegal (Ziguinchor): case report and review of the literature.

The kidney's primary squamous cell carcinoma is a rare tumor, representing 0.5-0.8% of malignant renal tumors and 4% of upper urinary tract tumors. This pathology often occurs after a long past history of renal lithiasis and repeated untreated or poorly treated urinary tract infections. The delay in diagnosis resulting from an insidious symptomatology, without specific signs, often leads to a pejorative development, especially in poor countries. A seventy-nine-year-old Senegalese woman, with no past history of lithiasis nor recurrent urinary tract infection and urinary schistosomiasis, was received for a recurrent total hematuria associated with left lumbar pain. Clinical examination revealed a mobile tender left lumbar mass, with lumbar contact and renal sloshing. The left renal tumor´s diagnosis was retained on clinical and scannographic arguments, justifying an enlarged left total nephrectomy, by laparotomy. The anatomopathological examination of the surgical sample made it possible to make the diagnosis of primary invasive squamous cell carcinoma of the left kidney and to find foci of carcinoma in-situ on squamous metaplasia in the calyxes. Unlike the typical case of primary squamous cell carcinoma of the kidney, our patient did not have a long past history of renal lithiasis nor untreated or poorly treated recurrent urinary tract infections and urinary schistosomiasis. Primary squamous cell carcinoma of the kidney may not be related to a past history of recurrent urinary tract infections and lithiasis, but to any other cause of squamous metaplasia of the urothelium. Surgery remains the best option for this entity.

[Appendicitis schistosomiasis]. / La bilharziose appendiculaire.

Appendiceal schistosomiasis is a rare disease of only histopathological diagnosis. Appendectomy should be followed by treatment with praziquantel to avoid complications. We report two cases of appendiceal schistosomiasis and discuss the role of this infection of this infection in the pathogenesis of appendicitis. Finally, we recommend a routine pathological examination of all appendicectomy specimen in endemic areas for better care for patients.

Retinoblastoma in children: a case series from Senegal.

Retinoblastoma is the most common tumor of the eye in Senegalese children. Diagnosis occurs often at a late stage, when enucleation is unavoidable. In this report, we describe all recorded cases occurring in Senegal over a 10-year period (2005-14). For the 106 cases clinically and radiological identified, the mean age at diagnosis was 30 months (2 months / 10 years). Leucocoria (74.6%) and exophthalmos (42.3%) were common signs of the disease. For the 67 cases identified through patient-file examination, extra-ocular forms were present in 30% of cases at the time of diagnosis and retinal detachment in 19% of cases. Chemotherapy and surgery were the only available therapeutic methods. Overall survival at 5 years was 70%. Retinoblastoma is a serious illness that threatens the lives and sight of affected children. There are about 10 cases per year in Senegal. Management can be enhanced by improving existing technical platforms and training medical staff.

[Pseudotumoral tuberculosis of the cervix]. / Tuberculose pseudo tumorale du col de l'utérus.

Tuberculosis of the cervix is rare and can mimick cervical cancer. Patients are paucisymptomatic and the disease is characterized by an insidious evolution, hence the delay in diagnosis. Common symptoms are non-specific contributing to therapeutic delay and increasing the risk of infertility which is perhaps inevitable. We report a case of tuberculosis of the cervix whose diagnosis given first wasn't obvious. Indeed, a patient was referred to our Department with suspected cervical cancer. Suspected diagnosis of cancer was then retained based on the presence of vaginal bleeding on contact and abdominopelvic CT scan results showing cervical cancer. Biopsy was indicated in order to confirm the diagnosis histologically. Anatomo-pathological examination objectified epitheliogigantocellular granuloma with caseous necrosis, supporting cervical tuberculosis. The other examinations were negative. The patient received TB treatment which led to healing. Diagnosis and treatment of tuberculosis of the cervix is often based on presumptive elements, hence the importance of anatomo-pathological examination.

[Retinoblastoma in Senegal: Pathologist's view]. / Le rétinoblastome au Sénégal : point de vue du pathologiste.

OBJECTIVES: Describe the macroscopic and microscopic profiles of the retinoblastoma (RB) in Senegal and correlate histological criteria to evolution to emerge severity factors. METHODOLOGY: We realized a retrospective study on 10years (January 2005-December 2014). Only patients (n=67) who performed a histological analysis of the enucleation specimen (n=68) were followed until the end of the study. RESULTS: The tumor measured an average of 3.8cm (2/4.5). Endophytic tumor development was in 55 cases (80.8%), exophytic in 6 cases (8.9%) and mixed in 7 cases (10.3%). Extra-retinal form was present in 13 cases (19.2%). The RB was well differentiated in 11 cases (16.2%), moderately differentiated in 31 cases (45.6%) and undifferentiated in 26 cases. The invasion of optic nerve (ON) was present in 18 cases (26.5%). The tumor was extra-retinal in 37 cases (54.4%). The anterior chamber was invaded in 6 cases (8.8%). The global survival at 2years was 84% and 70% at 5years. In multivariate analysis, well tumor differentiation and stage pT1 were associated with remission. The other-laminar of ON invasion, the massive invasion of the choroid and pT3 stage were recurrence risk factors. The undifferentiating tumor, invasion of the ON section, tumor sclera crossing and pT4 stage were predictive death. CONCLUSION: The RB histological prognostic factors should be clearly identified in the pathological reports as they guide the after surgical period care and follow-up management strategy.

[Atherosclerosis and coronary artery disease in Senegal: an autopsy series of 116 african patients at Aristide Le Dantec Hospital (Dakar-Senegal)]. / Athérosclérose aortique et coronarienne au Sénégal : à propos d'une série autopsique de 116 patients d'origine africaine au CHNU Aristide Le Dantec (Dakar-Sénégal).

OBJECTIVE: To study the prevalence of atherosclerosis (aortic and coronary lesions) in Senegalese people, to determine main risks factors and morphological patterns. METHODS: A prospective autopsy study was conducted in the pathology department of Aristide Le Dantec Hospital (Dakar-Senegal) where 116 specimens aged over 5 years old were studied. RESULTS: Autopsy study of 116 Senegalese specimens for atherosclerotic lesions revealed aortic lesions in 100 cases (86%), aortic and coronary lesions both in 48 cases. There were 88 men versus 12 women. The median age was 37.1 years comprised 5 to 77 years old. Hypertensive, smoking and abdominal obesity were detected respectively in 5 cases, 37 cases and 33 cases. In aortic vessel, the main lesions detected were severe fibrous plaques detected in 40 cases. In coronary arteries, fibrous plaques were detected in 18 cases, severe fibrous plaques in 17 cases. CONCLUSION: Our study in Senegalese population showed existence of atherosclerotic lesions. These lesions were more responsible for complications as myocardial infarction.

[A rare parotid tumor]. / Une tumeur parotidienne rare.

INTRODUCTION: Sebaceous lymphadenoma of the parotid (SLP) is a rare, benign tumor with similar epidemiological and macroscopic characteristics with other sebaceous differentiated tumors of the parotid (SDTP). The authors report a case of SLP in an 80-year-old woman. They then recall the distinctive histological and immunohistochemical criteria of SDTP. OBSERVATION: Mrs P. D. was received during a surgical consultation for the management of a painless right parotid swelling that has evolved for 10years, increasing slightly in volume. At admission, the mass was movable, firm with a healthy skin without facial paralysis or satellite lymphadenopathy. The surgical intervention performed removed a nodular mass measuring 7cm, encapsulated, yellowish. It was made of regular epithelial cells without atypia or mitoses organized in nests, trabeculae and massifs. This tumor also included small canalicular cystic dilatations associated with several islands of sebaceous glands. The stroma was dense lymphoid with follicles and germinal centers. The tumor cells were CK7+, P63+, MSA+ and had a Ki67<5%. The diagnosis of an SLP was retained. No additional therapy was performed. One year after surgery, the patient had no local recurrence or metastatic foci. CONCLUSION: SLP is a rare tumor with a particular histological and immunohistochemical profile. It is an epithelial tumor with sebaceous islands, a dense reactional lymphoid stroma, expression of luminal and basal epithelial markers and a low proliferation index.

[Exceptional etiology of acute renal: Burkitt's lymphoma]. / Une étiologie exceptionnelle de l'insuffisance rénale aiguë : le lymphome de Burkitt.

INTRODUCTION: Burkitt's lymphoma (BL) is an exceptional cause of acute renal failure (ARF). The origin of the tumor clone may be lymphoid follicles secondary to renal Epstein-Barr virus (EBV) infection. With the presentation of this clinical case, the pathogenesis, diagnostic criteria and evolution of this extremely rare affection will be discussed. OBSERVATION: A 4-year-old patient with a recent history of acute osteomyelitis of the right thigh presented an ARF without indications of post-infectious glomerulonephritis. Ultrasound showed enlarged kidneys without dilation of the excretory cavities. Diffuse interstitial infiltration of atypical lymphoid cells of medium size were noted upon renal biopsy. The tumor cells expressed antibodies against CD20, CD10, Bcl6, and Ki67 but not against Bcl2 or CD3. The search for an EBV infection was positive. A few days after diagnosis, the evolution was spontaneously fatal. DISCUSSION/CONCLUSION: BL of the kidney is a rare condition that accounts for less than 1 % of kidney tumors, associated almost invariably with EBV infection. The diagnosis is confirmed histologically by renal biopsy and the criteria of Malbrain affirms the primitive character of the lymphoma. BL of the kidney is a diagnostic and therapeutic emergency and may be fatal.

[Intra-thyroid metastasis and the pathologist]. / La métastase intra-thyroïdienne et le pathologiste.

Intra-thyroid metastases (ITM) are rarely observed clinically. The high blood flow of the thyroid and its high content of iodine explain this rarity. The clinical and radiological criteria of ITM are not very specific. The pathologist is the principal actor of ITM diagnosis. Cytology, intraoperative examination and histological techniques are the means available. The microscopic aspects of ITM are varied. Art is to differentiate ITM to undifferentiated primary tumor. We report two cases of ITM in patients aged 49 and 52 years, respectively. We discuss diagnostic methods and challenges for pathologists in identifying such lesions.

[Rectal endometriosis: An exceptional etiology of acute intestinal occlusion]. / Endométriose rectale : une cause exceptionnelle d'occlusion intestinale aiguë.

The intestinal occlusion acute is an emergency and therapeutic diagnostic. A rectal tumor is rarely the cause in a young adult. We are carrying the case of a patient of 43years old, received at emergency on a board of intestinal occlusion acute due to a rectal tumor of a fortuitous discovery during the operation. The final diagnosis after a histopathologic examination was for the less unexpected. It was rectal endometriosis in its tumor-like. A complementary medical care obtains satisfactory results.

[Morpho-epidemiological profile of elderly subject cancer in Dakar]. / Profils morpho-épidémiologiques des cancers du sujet âgé à Dakar.

UNLABELLED: The elderly is defined by WHO as any individual who has a chronological age greater than or equal to 60 years. The number of elderly is growing. The scarcity of work on malignant tumor pathology elderly contrasting with the difficulty of support have raised the interest of this work. MATERIALS AND METHODS: This is a descriptive and retrospective study carried out on a periode of 5 years based on the reported analyses of all public laboratories of anatomical pathology and cytology in Dakar. RESULTS: During the five years of our study on 1,264 cases of tumors of the elderly we identified 699 cases of cancer. The average age of patients was 68.82 years with a discreet male predominance (sex ratio=1.07). The most common malignant tumors were cancers of the prostate (23.74%), cancers of the cervix (16.88%), cancer of the breast (10.72%) and cancers of the skin and soft tissues (9.15%). Some tumor sites (stomach, larynx, esophagus, ganglion, sinus, bladder, liver, lungs and bronchi, vulva, eye, jaw, pancreas, bone) had always proved malignant. Tumor location was primitive in 97.56% and metastatic in 2.44%. The histological type of primary cancer was met by far dominated by carcinomas (91.20%) followed by lymphoma (3.81%), sarcomas (3.66%) and melanoma (1.31%). All cases of metastatic were carcinomas.

Fatal evolution of a huge right atrial free-floating thrombus.

KEY CLINICAL MESSAGE: Right atrial thrombus is a rare medical emergency that should be suspected in all cases of pulmonary embolism, and rapid action should be taken to ensure a timely, proper management.