Paratesticular tumors. A clinicopathological study from a single tertiary hospital in North India.

OBJECTIVE: Paratesticular tumors (PTT) are rare and form a heterogenous group, ranging from benign to malignant high grade sarcomas. This study was undertaken to describe the clinicopathological spectrum of PTTs received over a 20-year period. METHODS: All primary and secondary PTTs diagnosed from 2000 to 2019 in the pathology department of a tertiary care hospital in North India were retrospectively reviewed. Gross, histopathological features and immunohistochemistry (IHC) findings were correlated with clinical details. RESULTS: A total of 169 intra-scrotal tumors were diagnosed during the study period, out of which there were 30 PTTs (in 27 patients) comprising 17.75%. Age range was 4 to 85 years (median 58 years). Benign PTTs were the commonest (n = 21, 70%), followed by metastasis to the paratesticular region (n = 6, 20%) and then primary malignant PTTs (n = 3, 10%). The commonest benign PTT was lipoma (n = 16, 76.19%), followed by adenomatoid tumor (n = 3, 14.28%) with one case each (4.76%) of cellular angiofibroma and hemangioma. Among primary malignant PTT, there were two cases of rhabdomyosarcoma, and one case of biphasic malignant mesothelioma. Metastatic tumors included four cases of prostatic adenocarcinoma, and one case each of pancreatic signet ring cell carcinoma and clear cell renal cell carcinoma. CONCLUSION: PTTs show a wide clinicopathological spectrum. Benign PTTs are commoner than malignant PTTs. Meticulous grossing and histopathological examination supplemented by IHC is essential for an accurate diagnosis of this heterogenous class of tumors, which influences the role of adjuvant therapy and patient prognosis.

Tumor odontogénico adenomatoideo: reporte de un caso / Adenomatoid odontogenic tumor: report of a case

El tumor odontogénico adenomatoide (TOA) es una lesión benigna,infrecuente, clasificada por la OMS dentro de los tumores odontogénicoscon participación del ectomesénquima que muestra una morfología histológica muy peculiar. Esta entidad patológica es de baja prevalencia, representa 0.1% de los tumores y quistes de losmaxilares con raras recidivas. Su frecuencia de aparición es más comúnen pacientes jóvenes, generalmente mujeres, de mayor aparición en maxilar superior, asintomático, asociado a dientes sin erupcionar(principalmente caninos) que plantea diagnósticos diferenciales entre otras lesiones de mayor agresividad como el quiste dentígero y el ameloblastoma. Se presenta el caso de una paciente de nueve años de edad con lesión tumoral en el sector del maxilar superior izquierdo de 40 días de evolución. Clínicamente hay ausencia del órgano dentario número 23. Se indica la realización de una radiografía panorámica, en la cual se observa la presencia del órgano dental 23 en el piso de órbita del maxilar superior izquierdo. Se procede a la remoción quirúrgica con diagnóstico presuntivo de quiste dentígero, se biopsia el total de la lesión, con diagnóstico definitivo por histopatología de TOA, con buena evolución clínica odontológica.

The adenomatoid odontogenic tumor (TOA) is a rare, uncommon,WHO-classified lesion in odontogenic tumors with ectomesenchyma,which shows a very peculiar histological morphology. This pathologicalentity is of low prevalence representing 0.1% of the tumors and cystsof the jaws with rare recurrences. Its frequency of appearance is morecommon in young patients, generally females, of greater presentationin the upper jaw, asymptomatic, associated with unruptured teeth(mainly canines) that presents diff erential diagnoses among other moreaggressive lesions such as dentigerous cyst and ameloblastoma. Wepresent the case of a nine-year-old patient with tumor lesion in the leftupper jaw of 40 days of evolution. Clinically there is absence of the tooth23. A panoramic radiograph is indicated, in which the presence of thetooth 23 is observed in the orbital fl oor of the upper left jaw. Surgicalremoval is performed with a presumptive diagnosis of dentigerouscyst; the total of the lesion was biopsied, with defi nitive diagnosis byhistopathology of TOA with good odontological clinical evolution.

Cystic lymphangioma-like adenomatoid tumor of the adrenal gland: report of a rare case and review of the literature.

Adenomatoid tumors (AT) are uncommon, benign tumors of mesothelial origination most frequently encountered in the genital tracts of both sexes. Their occurrences in the extragenital sites are much rarer and could elicit a variety of differential diagnosis both clinically and morphologically. With regard to the adrenal gland, to the best knowledge of us, only 31 cases of AT have been reported in the English literature. Several histologic growth patterns have been documented in AT, among which cystic type is the least common one. We herein present a further case of AT arising in the adrenal of a 62-year-old Chinese man with a medical history for systemic hypertensive disease. The tumor was incidentally identified during routine medical examination. An abdomen computed tomography scan revealed a solitary mass in the right adrenal. Grossly, the poorly-circumscribed mass measured 3.0 x 3.0 x 2.0 cm with a cut surface showing a gelatinous texture with numerous tiny cystic structures. Microscopic examination showed an infiltrated lesion with honeycomb appearance mimicking a lymphangioma, which composed predominantly of variably sized and shaped anastomosing small cystic spaces lined by flattened endothelial-like cells, without any epithelioid or signet-ring like components present. Foci of extraadrenal tumor extension, lymphoid aggregates with occasional germinal centre formation, intralesional fat tissue, stromal myoid proliferation and ossification were also observed. Immunohistochemical analyses confirmed the mesothelial differentiation of this tumor and indicated a diagnosis of cystic lymphangiomatoid AT of the adrenal.

Tumor adenomatoide urológico: presentación clínico-patológica de 14 casos / Urologic adenomatoid tumor: clinico pathological presentation of 14 cases

El Tumor Adenomatoide es la neoplasia paratesticular más frecuente y localizada principalmente en el epidídimo. Material y método: Se presenta una serie clínico-patológica de 14 tumores adenomatoides urológicos diagnosticados entre 1975-2011. Resultados: La edad media de presentación fue de 46 años (rango 32-67 años). La mayoría de los casos se presentó como un nódulo firme indoloro en el epidídimo. No hubo casos de localización intratesticular. Se realizó tumorectomía en 13 casos y además orquiectomía en uno. Los tumores midieron una media de 1.9 cm (rango 0.3-5 cm) y macroscópicamente fueron sólidos, blanquecinos y bien delimitados. A la histología estaban formados por estructuras adenomatoides irregulares rodeadas por tejido fibroso. La inmunotinción para Queratina y Calretinina fueron positivas, lo que apoya el origen mesotelial del tumor. El curso clínico fue benigno en todos los casos, sin presentar recurrencias. Conclusión: Corresponde a una neoplasia benigna urogenital rara de origen mesotelial y que compromete con frecuencia el epidídimo. Se presentaron en hombres de edad media y que en la mayoría fueron tratados con tumorectomía, mostrando un curso clínico benigno...

Adenomatoid Tumor is the most frequent paratesticular neoplasia and it is located mainly in the epididymis. Material and methods: A series of 14 cases of Urological Adenomatoid Tumor diagnosed between 1975 - 2011 is presented. Results: Average age at presentation was 46 years (range 32-67 years). The majority of the cases were presented as a painless and firm nodule in the epididymis. No cases involving the testicular parenchyma were seen. The tumors measured an average of 1.9 cm (range 0.3 - 5 cm) and grossly all cases were solid, whitish and fair/y well demarcated. The histology revealed adenomatoid structures surrounded by fibrous tissue. The immunostains were positive for keratin and calretinin which support‘ the mesothelialial origin of the tumor. All cases showed a benign clinical course and no relapses were found. Conclusion: Correspond to a rare benign urogenital/neoplasia that frequently involves the epidermis. They were presented in middle age men and in the majority of the cases were treated by lumpectomy, showing a bening clinical course...