Adult type granulosa cell tumor of the testis with a heterologous sarcomatous component: case report and review of the literature

Adult granulosa cell tumor of the testis with malignant tendency: A case report with genetic analysis using high-throughput sequencing

BACKGROUND

The adult granulosa cell tumor of the testis is a rare sex-cord/stromal tumor, with a potentiality for late recurrence and metastasis. Because of its rarity, this tumor is poorly understood, particularly in terms of its molecular features. As a result, it is necessary to register each occurrence in order to study the evolution of this rare malignancy and develop therapeutic strategies.

METHODS

A 50-year-old man discovered a painless right testicular mass unexpectedly, and the mass steadily expanded for 2 months. Ultrasonography showed a 5.2 cm × 4.0 cm × 3.6 cm mass in the right testicle. A right radical orchiectomy was performed on September 7, 2016. The pathologic diagnosis was a testicular adult granulosa cell tumor. The post-computed tomography scans and bone scintigraphy ruled out distant metastases. A high-throughput sequencing of 520 cancer-related genes revealed FOXL2 C134W, CDKN2A E87Gfs*24, TP53 S183*, TERT c.-124C > T, and H3F3A K28R mutations in this case. Because the patient stated he would be unable to return to the hospital for a follow-up appointment on time, he elected to have 4 cycles of adjuvant chemotherapy BEP (bleomycin, etoposide, and cisplatin) after the right radical orchiectomy.

RESULTS

The patient has not had a clinical recurrence or metastasis in 6 years.

CONCLUSION

Surgery together with adjuvant chemotherapy may be useful treatment options for these individuals with malignant tendencies who are unable to visit the hospital for a follow-up appointment on time. Adult testicular granulosa cell tumors have a relatively complex genetic profile; their etiology is linked to a number of common driver genes, including TERT, CDKN2A, TP53, and H3F3A.

Molecular assessment of testicular adult granulosa cell tumor demonstrates significant differences when compared to ovarian counterparts

Testicular adult granulosa cell tumor (AGCT) is a rare type of sex-cord stromal tumor that affects patients of a wide age range and has the potential for late metastasis. In the testis, the diagnosis of AGCTs often requires the exclusion of other more common types of sex-cord stromal tumors. Immunohistochemistry is of limited utility, being used mostly to confirm sex-cord lineage and to exclude other entities when morphology is not typical. Unlike ovarian AGCTs, which are molecularly homogeneous and harbor a specific activating FOXL2 mutation (c.7558C > T p.C134W) in >90% of cases, the molecular characteristics of testicular AGCTs remain largely unknown. In the current study, we analyzed 13 testicular AGCTs diagnosed at multiple institutions using massively parallel DNA sequencing to evaluate single nucleotide variants, copy number alterations, and structural variants. In all, 10/13 cases were sequenced successfully. Notably, the FOXL2 c.7558C > T (p.C134W) mutation was identified in only a single case (1/10, 10%). The remaining cases were molecularly heterogeneous, with largely nonrecurrent genetic variants. Putative driver events in individual cases included a well-characterized gain-of-function NRAS mutation, as well as inactivation of ATM and TP53, among others. The only highly recurrent finding was single copy loss of 22q (7/10 cases, 70%). Comparatively, the frequencies of FOXL2 c.7558C > T (p.C134W) and 22q loss in 12 metastatic ovarian AGCTs identified in our database were 92% (11/12) and 42% (5/12), respectively. The results of the present study suggest that testicular AGCTs are different from their ovarian counterparts in that they appear to be molecularly heterogeneous and only rarely harbor FOXL2 mutations.

High-grade Transformation in Adult Granulosa Cell Tumor: Potential Diagnostic Challenges and the Utility of Molecular Testing

Adult granulosa cell tumor (AGCT) is the most common sex cord-stromal tumor, accounting for about 1% of all ovarian tumors. It has a propensity for recurrences, especially late in the disease course. High-grade or sarcomatoid transformation has been rarely described in AGCT. We present a case of a 65 year old woman who presented with hemodynamic shock and bowel obstruction from a large pelvic mass. Histologic examination revealed predominantly high-grade epithelioid and spindled cells with high mitotic activity and necrosis. A minor component suggestive of AGCT was also identified. Molecular analysis confirmed the diagnosis of AGCT by revealing FOXL2 C134W mutations. Additionally, TP53 mutations were also detected which may contribute to the high-grade transformation. Our case is unique because the high-grade sarcomatous component constituted most of the tumor and the areas of "typical" AGCT were minor. Also, the clinical and operative findings did not suggest a specific site of origin leading to a broad differential diagnosis. High-grade transformation in AGCT is a rarely described phenomenon. The awareness of this presentation is helpful in reaching the correct diagnosis. Molecular analysis may be an extremely helpful adjunct in challenging cases.

Adult-type granulosa cell tumor of the testis: A case report with immunohistochemical study

We report that a case of adult testicular granulosa cell tumor in a 40-year-old man who presented with a palpable testicular mass. The sectioned surface of the testis revealed a well-circumscribed, yellowish tan, solid mass with hemorrhagic foci. Histologically, the tumor was arranged in solid nests, trabeculae, gyriform, pseudopapillae and macro-and microfollicles in a fibrocollagenous stroma. The tumor cells were ovoid or carrot-shaped with scant cytoplasm and nuclear grooves. Immunohistochemically, the tumor cells were diffusely strongly positive for estrogen receptor, progesterone receptor, androgen receptor, CD10, CD56, calretinin and vimentin, and multifocally positive for inhibin, synaptophysin and cytokeratin.

Adult granulosa cell tumors of bilateral ovaries with pure cystic presentation: A case report and review of literature

RATIONALE

Granulosa cell tumors (GCTs) are rare, hormonally active sex cord-stromal tumors that generally present as solid unilateral ovarian lesions. It's quite uncommon that they present as pure bilateral ovarian cysts. Histopathology remains the gold standard for making a diagnosis of GCTs. However, as the differential diagnosis is difficult, cystic GCTs are frequently misdiagnosed as benign or other cystic tumors either prior to surgery or during pathologic diagnosis. Accordingly, herein, we describe a fairly rare case of bilateral ovarian cystic GCTs, along with a review of the related literature.

PATIENT CONCERNS

A 43-year-old woman presented with abdominal distension and chronic pain since 1 day. The patient had a history of dysmenorrhea.

DIAGNOSES

Physical examination revealed palpable bilateral adnexal tumors; ultrasonography revealed cystic and septate masses with a maximum diameter of 7.8 and 10.7 cm, respectively, in the bilateral ovaries. Hormonal analysis revealed that the blood estradiol levels were elevated. Postoperative pathological and immunohistochemical examinations of the surgical specimens revealed a final diagnosis of cystic adult GCTs of the ovaries.

INTERVENTIONS

The patient first underwent laparoscopic bilateral ovarian cystectomy. On the basis of the final pathological diagnosis report, abdominal total hysterectomy, bilateral oophoro-salpingectomy, and partial omentectomy were then performed. Microscopic examination revealed that there were no residual CGT cells. The patient's federation international of gynecology and obstetrics (FIGO) Stage was IB period.

OUTCOMES

The surgeries were successful. The tumor was a FIGO Stage IB tumor, and the patient did not require any additional treatment. The patient had been followed-up regularly for 2 years after surgery; she did not experience any complications and remained disease-free.

LESSONS SUBSECTIONS

Cystic GCTs should be considered in the differential diagnosis if a female patient shows bilateral ovarian cysts. They are extremely rare ovarian malignant tumors that must be differentiated from other ovarian tumors, especially purely cystic tumors and benign cysts. Although pathological and immunohistochemical findings are important for making the diagnosis, the varying histopathological features on microscope make diagnosis difficult, including tumor cells with luteinization or free cell clusters. The current case highlights the importance of physicians being aware of and suspecting cystic CGTs in similar cases, along with knowing the characteristics of GCTs for the diagnosis and differential diagnosis.

Adult-type granulosa cell tumor of the testicle: case report

Granulosa cell tumor (GCT) is a sex-cord neoplasm of the gonads classified into either juvenile (jGrCT) or adult type (aGrCT). It is commonly arising in ovaries but is much rarer in men, with only around 50 male cases previously reported in the literature. We report on a 54-year-old male patient with a right testicular GCT measuring 10.0×8.0×6.0 cm. The tumor was treated successfully with radical orchiectomy followed by computed tomography to assess lymph node involvement, and no further treatment was done. Pathological reports showed diffuse positivity for immunohistochemical stains, inhibin, vimentin, calretinin, and CD99. The clinical and histopathological features, treatment, and prognosis of aGrCT arising in the testicle of an adult male are also reviewed in this manuscript.

Adult Granulosa Cell Tumor of the Testis: A Case Report with a Review of the Literature

Adult granulosa cell tumor (AGCT) of the testis represents a very rare testicular neoplasm that is poorly understood clinically. Here we report the case of a 22-year-old male who presented with unspecific scrotal symptoms. Scrotal sonography disclosed a 6 mm hypoechoic intratesticular lesion. Histological examination after orchiectomy revealed a homogeneous and well demarcated neoplasm with monomorphic cells with nuclear grooving and microfollicular formation of the so-called Call-Exner bodies. Immunohistology showed positive stainings of vimentin, calretinin, and inhibin with negative stainings of the typical germ cell tumor markers. Thus, the diagnosis of a benign AGCT was made. The patient is well one year after surgery. A total of 91 previous AGCT cases were identified in the literature. Median age of the cases reported to date is 44 years, median tumor size 3.2 cm. 54.3% of the AGCT cases were located on the left side. 12 cases (13.2%) were of malignant nature. Testis-sparing surgery would be the treatment of choice, but only two of all cases had received that procedure. The present report aims to increase the clinical knowledge of AGCT and specifically to increase the clinician's vigilance with respect to testis-sparing surgery in probably benign testicular masses.

Adult testicular granulosa cell tumour: an extremely rare entity

Adult granulosa cell tumours are extremely rare and usually benign but sometimes can assume an aggressive behaviour. A 31-year-old man presented with a 45 mm testicular mass. Radical orchiectomy was performed. Histological examination showed elongated cells, with hyperchromatic nuclei and Call-Exner bodies. Immunohistochemical analysis revealed positivity to vimentin, inhibin and negative PLAP and AE1/AE3 staining. The patient did not receive any adjuvant therapy and remained asymptomatic during 10 years. There are few cases of adult granulosa cell tumours and there is no consensus regarding malignancy criteria, treatment and follow-up. The description of these entities is crucial to allow a better management of these patients.

Metastatic Granulosa Cell Tumor of the Testis: Clinical Presentation and Management

Granulosa cell tumors (GCTs) of the testis are rare sex cord-stromal tumors that are present in both juvenile and adult subtypes. While most adult GCTs are benign, those that present with distant metastases manifest a grave prognosis. Treatments for aggressive GCTs are not well established. Options that have been employed in previous cases include retroperitoneal lymph node dissection (RPLND), radiation, chemotherapy, or a combination thereof. We describe the case of a 57-year-old man who presented with a painless left testicular mass and painful gynecomastia. Serum tumor markers (alpha fetoprotein, human chorionic gonadotropin, and lactate dehydrogenase) and computed tomography of the chest and abdomen were negative. The patient underwent left radical orchiectomy. Immunohistochemical staining was consistent with a testicular GCT. He underwent a left-template laparoscopic RPLND which revealed 2/19 positive lymph nodes. Final pathological stage was IIA. He remains free of disease 32 months after surgery.

Adult-type granulosa cell tumour of the testis: Report of a case and review of the literature

Granulosa cell tumours (GCTs) can be either juvenile or adult type, and more commonly occur in the ovaries. Adult-type GCTs of the testis (AGCTT) are very rare and only 46 cases have previously been reported. We report here on a 48-year-old Filipino man with a left testicular AGCTT, which measured 1.2 × 1.2 × 1.0 cm. He underwent radical orchidectomy with postoperative surveillance for 1 year, which included computed tomography with oral intravenous contrast and clinical examinations, which have been unremarkable. The previously reported AGCTTs were briefly reviewed.