Strumosis peritoneal: estudio de extensión con 99mTc-pertecnectato / Peritoneal strumosis: an extension study with 99mTc-pertecnectate

Presentamos el caso de una paciente de 35 años, nuligesta, con antecedentes de quistectomía ovárica bilateral hace 3 años por un teratoma monodérmico tipo struma ovarii en ovario derecho y quiste hemorrágico en ovario izquierdo. En revisiones periódicas se observa crecimiento progresivo de la tumoración anexial izquierda por lo que se le realiza una nueva laparoscopia y ante los hallazgos se le practica una quistectomía de ovario izquierdo, salpinguectomía derecha y exéresis de múltiples implantes peritoneales. El diagnóstico anatomopatológico fue de struma ovarii izquierdo y strumosis peritoneal. Posteriormente se le realiza rastreo corporal total con 99mTc-pertecnetato para detectar otros implantes peritoneales y SPECT-TAC para localizarlos anatómicamente. Esta exploración ayudó a tomar una decisión terapéutica(AU)

We report the case of a 35-year-old nulliparous woman, with a previous history of ovarian cystectomy diagnosed 3 years earlier due a struma ovarii type of monodermal teratoma in the right ovary and a hemorrhagic cyst in the left ovary. Progressive growth of the left adnexal mass was observed in the periodic medical check-ups. Due to this, a second laparoscopy was performed and, based on the findings, a left ovarian cystectomy, right salpingectomy and resection of multiple peritoneal implants were carried out. The pathology diagnosis was left struma ovarii and peritoneal strumosis. A whole body and SPECT/CT scan with 99mTc-pertechnetate was performed to detect possible peritoneal implants. This study helped to make the therapeutic decision(AU)

[Peritoneal strumosis: an extension study with (99m)Tc-pertecnectate]. / Strumosis peritoneal: estudio de extensión con (99m)Tc-pertecnectato.

We report the case of a 35-year-old nulliparous woman, with a previous history of ovarian cystectomy diagnosed 3 years earlier due a struma ovarii type of monodermal teratoma in the right ovary and a hemorrhagic cyst in the left ovary. Progressive growth of the left adnexal mass was observed in the periodic medical check-ups. Due to this, a second laparoscopy was performed and, based on the findings, a left ovarian cystectomy, right salpingectomy and resection of multiple peritoneal implants were carried out. The pathology diagnosis was left struma ovarii and peritoneal strumosis. A whole body and SPECT/CT scan with (99m)Tc-pertechnetate was performed to detect possible peritoneal implants. This study helped to make the therapeutic decision.

[Indication for bone scans in early breast cancer staging]. / Indicación del rastreo óseo en la estadificación del cáncer de mama de inicio.

OBJECTIVE: Evaluate the indication for bone scanning during staging of early breast cancer in the light of scientific evidence to assess the need to modify practices with scant effectiveness. MATERIAL AND METHODS: The bone scans carried out in our Nuclear Medicine Department in 2007 on patients with primary breast cancer were reviewed retrospectively. Results were analyzed in relation to the clinical and histopathologic findings for each tumor. Bone scan results of tumors >2 cm y 3 cm, and pre-treatment clinical stage. RESULTS: Out of 245 bone scans of patients with breast cancer, 237 (97%) were negative for metastatic disease and 8 (3%) were positive. Lesions <2 cm (Tis and T1) were diagnosed in 131 patients (53.5%), none of which had bone metastasis at time of diagnosis. Lesions >2 cm and 3 cm. The bone scan findings did not modify staging in any of the 66 patients with T2 tumors stage IIA, but it did modify staging in 2 of 12 patients with stage IIB tumors. Twenty percent of 15 patients with T3 tumors and 13% of patients with T4 tumors had bone metastasis at time of diagnosis. CONCLUSIONS: Ineffective practices should be modified and bone scanning should not be indicated in patients with early breast cancer Tis, T1 and T2 with tumor

Indicación del rastreo óseo en la estadificación del cáncer de mama de inicio / Indication of bone scans in early breast cancer staging

ObjetivosRevisar nuestra experiencia y reflexionar a la luz de la evidencia científica sobre la indicación del rastreo óseo (RO) en la estadificación del cáncer de mama de inicio en estadios precoces, con el fin de contribuir en la modificación de rutinas de baja eficacia.Material y métodosRevisión retrospectiva de los RO hechos en nuestro Servicio de Medicina Nuclear durante 2007 en las pacientes con cáncer de mama de inicio, analizando su resultado en función del tamaño clínico o anatomopatológico tumoral. Los RO para tumores T2 se analizaron estratificando las lesiones en dos grupos, <= o > de 3cm y en función de su estadio clínico pretratamiento.ResultadosSe incluyeron 245 rastreos, 237 de éstos (97%) fueron negativos y 8 de éstos (3%) fueron positivos para metástasis óseas. En 131 pacientes (53,5%) se diagnosticaron lesiones<2cm (Tis y T1) y ninguna tenía metástasis óseas. Se hallaron 84 lesiones (34%) que eran >2cm y <=5cm (T2) y entre éstas, el 3,6% de las pacientes presentó metástasis óseas, sin diferencias entre lesiones <=3cm y >3cm. El RO no modificó el estadio en ninguna de las 66 pacientes con tumores T2 en estadio IIA clínico, mientras que sí lo hizo en 2 de las 12 pacientes en estadio clínico IIB. El 20% de las 15 pacientes con lesiones T3 y el 13% de las 15 pacientes con T4 presentaron metástasis óseas en el diagnóstico.ConclusionesEs necesario modificar rutinas poco eficientes excluyendo de las indicaciones del RO la estadificación de las neoplasias de mama de inicio con lesiones <=2cm y lesiones en estadio clínico IIA, siendo necesaria su realización previa al tratamiento en el resto de los casos(AU)

ObjectiveEvaluate the indication for bone scanning during staging of early breast cancer in the light of scientific evidence to assess the need to modify practices with scant effectiveness.Material and methodsThe bone scans carried out in our Nuclear Medicine Department in 2007 on patients with primary breast cancer were reviewed retrospectively. Results were analyzed in relation to the clinical and histopathologic findings for each tumor. Bone scan results of tumors >2cm y <=5cm (T2) were analyzed in two groups stratified by tumor size, <=3cm or >3cm, and pre-treatment clinical stage.ResultsOut of 245 bone scans of patients with breast cancer, 237 (97%) were negative for metastatic disease and 8 (3%) were positive. Lesions<2cm (Tis and T1) were diagnosed in 131 patients (53.5%), none of which had bone metastasis at time of diagnosis. Lesions >2cm and <=5cm (T2) were diagnosed in 84 patients (34%), of which 3.6% had bone metastasis. There were no differences in the rate of bone metastases in patients with stage T2 disease and lesions <=3cm vs. >3cm. The bone scan findings did not modify staging in any of the 66 patients with T2 tumors stage IIA, but it did modify staging in 2 of 12 patients with stage IIB tumors. Twenty percent of 15 patients with T3 tumors and 13% of patients with T4 tumors had bone metastasis at time of diagnosis.ConclusionsIneffective practices should be modified and bone scanning should not be indicated in patients with early breast cancer Tis, T1 and T2 with tumor <=2cm, clinical stage IIA. Pre-treatment bone scanning is still indicated in T2 IIB, T3 and T4 disease(AU)

SPECT-TAC de baja dosis con 67Ga en un caso de espondilodiscitis y hernia de Schmorl / 67Ga SPECT/Low-Dose CT. A case report of spondylodiscitis and Schmorl's node

Varón de 61 años con diagnóstico microbiológico de espondilodiscitis en L3-L4, en tratamiento antibiótico, al que se le realizó un estudio gammagráfico con 67Ga para evaluar la respuesta al tratamiento antibiótico por persistencia de clínica dolorosa.La gammagrafía planar con 67Ga mostró focos con captación patológica en los cuerpos vertebrales de L2 y de L4. Se realizó una SPECT-TAC de baja dosis de la región lumbar, obteniendo una imagen de espondilodiscitis activa en L3-L4 además de identificar un segundo foco en L2, que fue compatible con una hernia intraesponjosa de Schmorl.En este caso, la imagen híbrida de SPECT-TAC ha permitido evitar un falso positivo al localizar y caracterizar una lesión con captación patológica de 67Ga, mejorando la especificidad de la prueba y evitando un error diagnóstico(AU)

A 61-year-old male patient with microbiological diagnosis of L3-L4 spondylodiscitis and persist pain underwent a 67Ga scintigraphic study to assess the antibiotic treatment response.Pathological uptake foci in vertebral bodies of L2 and L4 were observed in the 67Ga planar scintigraphy. A SPECT low-dose CT of the lumbar spine was performed as part of anatomical correlated protocol, detecting an active spondylodiscitis in L3-L4 and a second uptake foci in L2 that was identify as a Schmorl's node.In this case the SPECT-CT hybrid image allowed us to avoid a false positive diagnosis to by locate and characterize an image with abnormal uptake of 67Ga, improving the test specificity and avoiding a wrong diagnosis(AU)

[67Ga SPECT/low-dose CT. A case report of spondylodiscitis and Schmorl's node]. / SPECT-TAC de baja dosis con 67Ga en un caso de espondilodiscitis y hernia de Schmorl.

A 61-year-old male patient with microbiological diagnosis of L3-L4 spondylodiscitis and persist pain underwent a (67)Ga scintigraphic study to assess the antibiotic treatment response. Pathological uptake foci in vertebral bodies of L2 and L4 were observed in the (67)Ga planar scintigraphy. A SPECT low-dose CT of the lumbar spine was performed as part of anatomical correlated protocol, detecting an active spondylodiscitis in L3-L4 and a second uptake foci in L2 that was identify as a Schmorl's node. In this case the SPECT-CT hybrid image allowed us to avoid a false positive diagnosis to by locate and characterize an image with abnormal uptake of (67)Ga, improving the test specificity and avoiding a wrong diagnosis.